![[dr. bob]](/dr-bob-sm.gif)
Dr. Bob is Robert Hsiung, MD,
bob@dr-bob.orgShown: posts 1474 to 1498 of 10407. Go back in thread:
Posted by Mary-Teresa on December 5, 2001, at 18:06:57
In reply to Re: To Allen F. re side effects, posted by Allen F. on December 5, 2001, at 15:45:02
Hi Allen, are you still taking effexor. Its highly seratonergic. I saw a neurologist about the ringing I developed from an ssri, and he suggested it could have been caused by spikes in the seratonin levels. This was also the explanation given by the manufacturer. I have been on benzodiazepams (excuse the spelling) for weeks, and today started on nortriptyline. I did find that listening to a cd of a sound that matched the tone of the ringing helped me. There are cds sold through the American Tinnitus Society that can give you some relief in that dept. I hope you feel better soon. Please keep me posted. Mary
Posted by Allen F. on December 5, 2001, at 21:28:51
In reply to Re: To Allen F. re side effects, posted by Mary-Teresa on December 5, 2001, at 18:06:57
Yes, still on Effexor but hopefully I can find something that I don't have the reactions too soon. I am confussed as to what is causing the side effects, when I talk to the Doctor (Phch) he doesn't believe that they are related to the meds.
Are you still on Effexor? Has the ringing in your ears stoped?
Posted by MB on December 6, 2001, at 12:24:13
In reply to Re: To Allen F. re side effects, posted by Allen F. on December 5, 2001, at 21:28:51
For what it's worth, my dad had horrible tinnitus on both Effexor and Paxil. Now it's better since he got off those medications. It really makes me mad when I hear stories of psychiatrists not believing patients about medication side effects. They've never had to take these drugs, and they don't know all the weird, horrible side effects that can emerge. I feel for you and am sending warm wishes your way. Best of luck to you. If you need medication, maybe an antidepressant that works a little differently would give you relief without the tinnitus?
> Yes, still on Effexor but hopefully I can find something that I don't have the reactions too soon. I am confussed as to what is causing the side effects, when I talk to the Doctor (Phch) he doesn't believe that they are related to the meds.
>
> Are you still on Effexor? Has the ringing in your ears stoped?
Posted by Mary-Teresa on December 6, 2001, at 12:31:37
In reply to Re: To Allen F. re side effects » Allen F., posted by MB on December 6, 2001, at 12:24:13
> Can you please tell me if your Dad's tinnitus went completely away after stopping the meds, and how long did that take. Mine is now a pulsating wispery noise after 12 weeks off zoloft.
Thanks
Mary
Posted by JANNBEAU on December 6, 2001, at 12:44:31
In reply to Re: To Allen F. re side effects » Allen F., posted by MB on December 6, 2001, at 12:24:13
> Irritates me, too--especially when the product insert states that a side-effect is KNOWN to the drug company. For instance, TINNITUS is listed as a side effect of Effexor!! FYI, you can get the physician's product insert from the pharmacist by asking for it. I always get these physician's inserts (NOT the "Information for patients" insert) and I READ them before I start a new medication. I also search books and internet, including Medline for DRUG INTERACTIONS.
For what it's worth, my dad had horrible tinnitus on both Effexor and Paxil. Now it's better since he got off those medications. It really makes me mad when I hear stories of psychiatrists not believing patients about medication side effects. They've never had to take these drugs, and they don't know all the weird, horrible side effects that can emerge. I feel for you and am sending warm wishes your way. Best of luck to you. If you need medication, maybe an antidepressant that works a little differently would give you relief without the tinnitus?
>
> > Yes, still on Effexor but hopefully I can find something that I don't have the reactions too soon. I am confussed as to what is causing the side effects, when I talk to the Doctor (Phch) he doesn't believe that they are related to the meds.
> >
> > Are you still on Effexor? Has the ringing in your ears stoped?
Posted by MB on December 7, 2001, at 1:52:03
In reply to Re: to MD, posted by Mary-Teresa on December 6, 2001, at 12:31:37
My dad had mild tinnitus before he started on the medication. On the medication, it became unbearable. I think his case was a case where the medicine made the tinnitus worse, but it wasn't the entire cause. Now that he is off the medicine, the ringing in his ears has gotten a lot better. I'm not sure if it has gone completely away, though.
> > Can you please tell me if your Dad's tinnitus went completely away after stopping the meds, and how long did that take. Mine is now a pulsating wispery noise after 12 weeks off zoloft.
> Thanks
> Mary
Posted by Spencer on December 7, 2001, at 3:58:38
In reply to Re: to MD » Mary-Teresa, posted by MB on December 7, 2001, at 1:52:03
I'm sorry to hear that people are suffering from bad side effects. I have had tinnitus generally in a mild form for years, but I had really bad tinnitus in the months leading up to my severe depression this August/September. The ringing noise has actually subsided a lot since I went on Effexor XR. Also, my sinus problem, in the form of a post-nasal drip, has got very much better. The tickly irritating cough I had has gone completely.
Posted by dhldn on December 8, 2001, at 11:40:37
In reply to Re: I've had success. Why won't you print that? » Noddie, posted by Leo on March 16, 2001, at 17:21:15
It is concerning that venlafaxine has a close structural similarity to tramadol (a new narcotic analgesic). There is evidence that it has analgesic effects that are blocked by naloxone; that suggests it may be acting partly as an opioid drug.
It seems that venlafaxine may be particularly prone to interact with MAOIs and thus be implicated in fatal serotonin syndrome reactions.
Venlafaxine, when used in larger doses of over ~150 mg, may cause hypertension in some people, another problem that requires monitoring and may debar its use in some patients.
What the place of venlafaxine should be at lower doses (ie up to ~150 mg) in primary care is hard to judge. It shares the low interaction propensity (via CYP450) of sertraline and citalopram; but at lower doses probably has no particular advantages and is much more toxic in over-dose than any of the SSRIs or even than some of the old tricyclic antidepressants.
It behoves us all to be especially cautious about drugs when there is uncertainty over the mechanism of their action. Venlafaxine's toxicity in over-dose and its similarities to the narcotic analgesic 'tramadol' warrant close monitoring and caution.
My evaluation of the current evidence is that venlafaxine should be used sparingly in primary care settings with care and due recognition of the uncertainties surrounding it; wether it will prove suitable as a treatment for generalised anxiety disorder may become a contentious issue.
History repeatedly demonstrates that new is not always better. History is repeatedly ignored.
The FDA have now officially amended the product information on venlafaxine (2000) as follows:--Discontinuation symptoms have been systematically evaluated in patients taking venlafaxine.... Abrupt discontinuation or dose reduction... is associated with the appearance of new symptoms, the frequency of which is increased at higher doses and with longer duration of treatment.
Reported symptoms:--
agitation, anorexia, anxiety, confusion, coordination impaired, diarrhea, dizziness, dry mouth, dysphoric mood, fasciculation, fatigue, headaches, hypomania, insomnia, nausea, nervousness, nightmares, sensory disturbances (including shock-like electrical sensations), somnolence, sweating, tremor, vertigo, and vomiting.
It is therefore recommended that the dosage of Effexor be tapered gradually and the patient monitored. The period required for tapering may depend on the dose, duration of therapy and the individual patient.Subscribe to 'Psychopharmacology update notes' to see a fuller analysis and references.
Dr Ken Gillman MRC PsychPsychoTropical Research
Posted by Elizabeth on December 8, 2001, at 19:57:05
In reply to Effexor an opiate?, posted by dhldn on December 8, 2001, at 11:40:37
> It is concerning that venlafaxine has a close structural similarity to tramadol (a new narcotic analgesic). There is evidence that it has analgesic effects that are blocked by naloxone; that suggests it may be acting partly as an opioid drug.
That would be interesting, although I'm sure that Wyeth-Ayerst would do their best to keep it quiet.
> It seems that venlafaxine may be particularly prone to interact with MAOIs and thus be implicated in fatal serotonin syndrome reactions.
No more than any of the other serotonin reuptake inhibitors.
> ...is much more toxic in over-dose than any of the SSRIs or even than some of the old tricyclic antidepressants.
More than some of the TCAs? That's a bit of a surprise.
> History repeatedly demonstrates that new is not always better. History is repeatedly ignored.
In the (admittedly brief) history of pharmaceuticals, it seems to have been the case, mostly, that newer drugs have had *less* effect than their predecessors.
-elizabeth
Posted by Cloud 9 on December 10, 2001, at 5:51:55
In reply to Effexor an opiate?, posted by dhldn on December 8, 2001, at 11:40:37
>Venlafaxine, when used in larger doses of over ~150 mg, may cause hypertension in some people, another problem that requires monitoring and may debar its use in some patients.
>What the place of venlafaxine should be at lower doses (ie up to ~150 mg) in primary care is hard to judge. It shares the low interaction propensity (via CYP450) of sertraline and citalopram; but at lower doses probably has no particular advantages and is much more toxic in over-dose than any of the SSRIs or even than some of the old tricyclic antidepressants.
Just a few questions regarding your entry...
Does this mean at a low dosage it is inferior OR equal to other SSRI's in efficacy? If it's a potentially toxic drug is it possible to over-dose at such a low dosage? What are the advantages of taking effexor at high doses ( >150mg)? Would you recommend another SSRI in lieu of Effexor for GAD?
Thanks for your help.
Posted by ArtChee on December 10, 2001, at 9:29:03
In reply to 4 Weeks off Effexor, posted by Leo on March 7, 2001, at 17:23:26
Read your post as I am now just a week & a half off a 300mg/day dosage of EFFEXOR. My sister has been on the samae dosage, and finds that it has given her "new energy." In my case, after 2.5 months it did NOTHING positive for me. I suffered mild side effects, that could have been contendable had it relieved the depression.
For years my mother was treated medically for depression with Prozac and Paxil. The Paxil produced noticable changes in her attitude, BUT was no "cure all." She has ALSO been treated for YEARS for Hypertension. Is hypertension a genetic 'disease?' or is it the physiological result of anxiety & tension? Over the years she had to have her medication adjusted time and again. It would lower her blood pressure to the point of illness & hospitalization, and need to be re-evaluated & adjusted. What might be the consequence of someone being on medication to reduce blood pressure, and then put them on Paxil, which successfully relieves anxiety (which would in itself lower the blood pressure)?
I have fought chronic depression for 30 years. I have sought "professional help" in every manner that was available to me. I have spent thousands of self insured dollars to find a release from the "demons" tormenting me, all to no avail - marriage counseling, hypnosis, hypnotherapy, personal counseling, psychotherapy, psychiatry, psychic counseling, and family therapy. Three years ago, I resorted to psychopharmacy, hoping that new developments in this area may bring me relief that "talk therapy" could not. I have seen two Psychiatrists, as well as my general physician, for antidepressants. I have been on Zocor, Effexor, Paxil (which killed any energy that I had), Serzone, Wellbutrin, Celexa, Prozac, and Provigil. One of the psychiatrists even guessed that, since these medicatiions were ineffective, that MAYBE I had Attention Deficit Hyperactivity Disorder. He prescribed Concerta -- which almost put me to sleep!!
Everyone is different & has varying reactions to these medications. I am glad that my Mom and Sister have felt "better" by using antidepressants. HOWEVER, is this not treating the SYMPTOMS of an "emotional dis-ease"?!?!? Would it not be SO MUCH BETTER to treat the source of the symptom and avoid putting various and assorted medications in your body???
In desperation, I have spent an hour a week in psychotherapy for the LAST TEN MONTHS, without a clue of what was happening, what was SUPPOSED to be happening, or where it was to go. The therapist explained that I need to "get in touch with my ANGER." I felt that I had no anger, other than self anger for not being able to find my way in life & be a productive individual. I was on the verge of quitting several times. WOULD HAVE, except this Dr. stopped charging for his hour, rather than let me go back to my desperation. Finally, I did concede that I DO have suppressed anger, as I realized how I tend to snap at my wife when it is in no way deserved.
At a time when I was feeling as low as I have ever in my life felt - with NO help from 300mg of daily EFFEXOR (with anxiety increasing with the increasing dosage)- I picked up a couple of books that were around the house. THE SECRET STRENGHT OF DEPRESSION told me that Depression was an "opportunity to change." THE SEAT OF THE SOUL explained that for all of my life I have been seeking "external control" of my life and environment, and have been in conflict with my "true nature." The anger that I need to get in touch with is due to some confict between who I am truly am (as a spiritual being) and who I THINK that I SHOULD be. For my ENTIRE LIFE I have been stuggling to MAKE myself a whole person, while never realizing that it is already there, and all the efforts I was struggling with were just blocking the flow of the natural person that IS WITHIN, that I don't NEED to put there.
The after effects of EFFEXOR are now inhibiting my moving closer to discovering the source of my anger. I am lethargic, light headed, and exhausted with mild headaches that I haven't had in the 10 or 15 years prior to EFFEXOR. I just lost my Mom October 19th. She had lived alone for 37 years after my Dad passed away. That probably was a lot due to her anxieties and preference to retire to her bed and read novel after novel after novel. It pains me greatly that she lived for 85 years with this interior conflict that caused her so much anxiety, that had to be medicated.
I would hope for my own sake that I have finally come to PERSONAL REVELATION that will lead me to being a whole person -- or as much of one that I can be. As I am not there yet, I cannot witness this as my TRUTH, and wish it for anyone else. However, with my experience with antidepressants, that AIN'T WHERE ITS AT! It is merely the treating of the symptom of one's emotional dis-ease. If you manage to receive some relief from depression, please use that reprieve to "find your true self" and eliminate the need to medicate your body.
I wish you all PEACE & HAPPINESS in your individual quests, and MERRY CHRISTMAS TO ALL!!!
Posted by erica a on December 10, 2001, at 9:51:15
In reply to Re: 4 Weeks off Effexor, posted by ArtChee on December 10, 2001, at 9:29:03
> Read your post as I am now just a week & a half off a 300mg/day dosage of EFFEXOR. My sister has been on the samae dosage, and finds that it has given her "new energy." In my case, after 2.5 months it did NOTHING positive for me. I suffered mild side effects, that could have been contendable had it relieved the depression.
>
> For years my mother was treated medically for depression with Prozac and Paxil. The Paxil produced noticable changes in her attitude, BUT was no "cure all." She has ALSO been treated for YEARS for Hypertension. Is hypertension a genetic 'disease?' or is it the physiological result of anxiety & tension? Over the years she had to have her medication adjusted time and again. It would lower her blood pressure to the point of illness & hospitalization, and need to be re-evaluated & adjusted. What might be the consequence of someone being on medication to reduce blood pressure, and then put them on Paxil, which successfully relieves anxiety (which would in itself lower the blood pressure)?
>
> I have fought chronic depression for 30 years. I have sought "professional help" in every manner that was available to me. I have spent thousands of self insured dollars to find a release from the "demons" tormenting me, all to no avail - marriage counseling, hypnosis, hypnotherapy, personal counseling, psychotherapy, psychiatry, psychic counseling, and family therapy. Three years ago, I resorted to psychopharmacy, hoping that new developments in this area may bring me relief that "talk therapy" could not. I have seen two Psychiatrists, as well as my general physician, for antidepressants. I have been on Zocor, Effexor, Paxil (which killed any energy that I had), Serzone, Wellbutrin, Celexa, Prozac, and Provigil. One of the psychiatrists even guessed that, since these medicatiions were ineffective, that MAYBE I had Attention Deficit Hyperactivity Disorder. He prescribed Concerta -- which almost put me to sleep!!
>
> Everyone is different & has varying reactions to these medications. I am glad that my Mom and Sister have felt "better" by using antidepressants. HOWEVER, is this not treating the SYMPTOMS of an "emotional dis-ease"?!?!? Would it not be SO MUCH BETTER to treat the source of the symptom and avoid putting various and assorted medications in your body???
>
> In desperation, I have spent an hour a week in psychotherapy for the LAST TEN MONTHS, without a clue of what was happening, what was SUPPOSED to be happening, or where it was to go. The therapist explained that I need to "get in touch with my ANGER." I felt that I had no anger, other than self anger for not being able to find my way in life & be a productive individual. I was on the verge of quitting several times. WOULD HAVE, except this Dr. stopped charging for his hour, rather than let me go back to my desperation. Finally, I did concede that I DO have suppressed anger, as I realized how I tend to snap at my wife when it is in no way deserved.
>
> At a time when I was feeling as low as I have ever in my life felt - with NO help from 300mg of daily EFFEXOR (with anxiety increasing with the increasing dosage)- I picked up a couple of books that were around the house. THE SECRET STRENGHT OF DEPRESSION told me that Depression was an "opportunity to change." THE SEAT OF THE SOUL explained that for all of my life I have been seeking "external control" of my life and environment, and have been in conflict with my "true nature." The anger that I need to get in touch with is due to some confict between who I am truly am (as a spiritual being) and who I THINK that I SHOULD be. For my ENTIRE LIFE I have been stuggling to MAKE myself a whole person, while never realizing that it is already there, and all the efforts I was struggling with were just blocking the flow of the natural person that IS WITHIN, that I don't NEED to put there.
>
> The after effects of EFFEXOR are now inhibiting my moving closer to discovering the source of my anger. I am lethargic, light headed, and exhausted with mild headaches that I haven't had in the 10 or 15 years prior to EFFEXOR. I just lost my Mom October 19th. She had lived alone for 37 years after my Dad passed away. That probably was a lot due to her anxieties and preference to retire to her bed and read novel after novel after novel. It pains me greatly that she lived for 85 years with this interior conflict that caused her so much anxiety, that had to be medicated.
>
> I would hope for my own sake that I have finally come to PERSONAL REVELATION that will lead me to being a whole person -- or as much of one that I can be. As I am not there yet, I cannot witness this as my TRUTH, and wish it for anyone else. However, with my experience with antidepressants, that AIN'T WHERE ITS AT! It is merely the treating of the symptom of one's emotional dis-ease. If you manage to receive some relief from depression, please use that reprieve to "find your true self" and eliminate the need to medicate your body.
>
> I wish you all PEACE & HAPPINESS in your individual quests, and MERRY CHRISTMAS TO ALL!!!
That was the best post I've read since coming on this message board. I thank you and I say you are correct. Anti-depressants treat the symtoms not the cause. I've been off of Effexor since sometimes in October, and it's been a constant rollercoaster. I couldn't figure out why I was depressed, I'd been told I suffer from clinical depression and that I have a chemical imbalance, which I don't know how that was diagnosed. Anyway my mom came by my job to see me the other day, we don't get alone alot, but I love her. She came by and I was having a bad day, crying, and feeling empty. She put her arms around me and she said if I have never done this, I'm doing it now, she said 'please forgive me for all the hurt I have caused you', and my whole body got warm. I felt filled. No, this may not be the start of a GREAT relationship between my mom and me, but it's a start for my mental and emotional self to heal. I've been working out and I feel great. I had previously said that I couldn't lose the weight, but I am losing, but I'm gaining well being.GOOD LUCK AND GOD BLESS YOU ALL!!!! I SAY FIND YOUR INNER SELF AND FIND YOUR INNER PEACE AND BELIEVE ME IT WILL RADIATE TO YOUR OUTER SELF.
GET FIT INSIDE AND OUT.
Posted by Willow on December 10, 2001, at 10:33:16
In reply to Re: Effexor an opiate? » dhldn, posted by Cloud 9 on December 10, 2001, at 5:51:55
> Does this mean at a low dosage it is inferior OR equal to other SSRI's in efficacy?
Nobody can measure the efficiency of a drug for an individual except that individual, especially when it comes to mental health issues.
> If it's a potentially toxic drug is it possible to over-dose at such a low dosage?
I had pointed out to my child that she couldn't believe everything she sees and hears on television. I was giving her some advice from something I read on the internet. Smart little cookie pointed out to me that I shouldn't believe everything I read on the net.
In my opinion, you have no chance of an "overdose" on a low dose of effexor.
>Would you recommend another SSRI in lieu of Effexor for GAD?
For myself effexor has been excellent for symptoms of GAD. I kept seeing improvement even months after being on the medication. It taught me that patience was really important regarding AD's and treating symptoms of mental illness.
Just some of my many opinions!
BEST WISHES
Whistling Willow
Posted by Cloud 9 on December 10, 2001, at 11:54:23
In reply to Effexor and GAD » Cloud 9, posted by Willow on December 10, 2001, at 10:33:16
First two questions were more rhetorical than anything... basically poking holes at a somewhat audacious stance taken by the author.
You're right it is impossible for one to judge the "efficiency" of a drug, thus shouldn't make general statements about one being or not being advantageous to another. Or mentioning over-dosing and administering ads at low increments in the same paragraph.
But thanks for reminding me that everything on the net isn't credible... does that mean those naked pictures i get of Brittany Spears are not really her?
I'm glad the GAD has subsided with EXR use... good to know, hopefully mine will too in time.
Cheers!
Cloud 9
Posted by Willow on December 10, 2001, at 22:18:20
In reply to Re: Effexor and GAD » Willow, posted by Cloud 9 on December 10, 2001, at 11:54:23
Posted by JANNBEAU on December 12, 2001, at 11:53:16
In reply to Effexor an opiate?, posted by dhldn on December 8, 2001, at 11:40:37
>My God! So that's why I felt I was going to DIE when my so-called "pain management specialist" put me on Effexor XR (37.5 mg qday) AND tramadol (50 mg every six hours up to a maximum of 6 tabs per day) without warning me of interactions! I stayed on this regimen for one week, then got what I can only figure was "serotonin syndrome" (completely unable to function-- memory loss; cognitive dysfunction; dizziness; possible seizure activity; somnolence; nervousness; sweating; tremors; nausea; anorexia; somnolence). DC'd tramadol--within hours, I was back to "normal"--at least I could function again and remember my name!
By the way, in the U.S., Ultram is NOT yet a controlled substance (although there are rumors that the FDA is moving that way--I figured out the narcotic properties of tramadol by reading the literature on the drug).
Is it possible that tramadol has some sort of "mixed" profile in that the parent drug may act primarily on serotonin, norepinephrine, and, perhaps, dopamine, while the principal metabolite has a higher affinity for the mu opioid receptors? Certainly, pain relief from tramadol seems to be delayed for several hours (6 hrs--the time it takes to get significant AUC for principal metabolite?).
If anything is deceiving, it is that the manufacturer of tramadol has claimed for five years that tramadol (Ultram in the U.S.) is not addictive! We've heard that one before, haven't we? You might not remember the hype when DARVON was first approved, but I do (I'm old!). Same story with Ultram! Again, as you stated above, 'history repeats itself' and 'history is repeatedly ignored!' I resent it that I received NONE of this information for Effexor (venlafaxine) OR tramadol prescribed concomitantly. Although I may (probably) would have chosen to go through with treatment, I would have been better able to make an INFORMED decision had I been given the facts! I wonder if the physician who prescribed these meds for me even KNOWS the facts?
I WOULD like to state that I noticed an immediated and dramatic reduction in my pain level when I started EFFEXOR XR (37.5 mg qd; I have chronic "intractable" pain from extensive degenerative changes in my cervical and thoracic spine, costochondral joints, knees, etc). Although I THINK the doc was prescribing Effexor as an AD, the pain relief makes sense in light of the structural similarity of Effexor and Ultram, as does the interaction between the two that I suffered. Thus, beware of drug interactions between Effexor and Ultram!
The structure and opiod properties of Effexor may, also, account for the stories of difficulty discontinuing Effexor. The signs and symptoms are strangely similar to those of any narcotic withdrawal syndrome, are they not?
Interestingly, the antidepressant effects of Effexor (if there WERE any) seem to have diminished dramatically after about two months, but the pain-relieving effects are still potent.
Forgive the disorganization. My apologies; there is a lot to say and I don't have much time to organize.
Posted by melmel on December 12, 2001, at 13:11:30
In reply to Anyone had success on Effexor XR? , posted by jp on October 24, 1999, at 14:59:14
hi! i'm new to taking effexor xr and have some questions. i usually wake up at 3am and can't go back to sleep. should i take it in the morning instead of at night? i'm taking 3 pills a day (225 mg), should i split the dosage? any help or tips would be great. thanks!
Posted by Allen F. on December 12, 2001, at 13:22:32
In reply to Re: Effexor an opiate? » dhldn, posted by JANNBEAU on December 12, 2001, at 11:53:16
Met with my Phycritist today and discussed the side-effects I was having (agian). He wants me to discontinue Effexor and see if they go away. He said to reduce the dosage to 37.5mg for a week, then half that for a week, and then go off completly. Then if the side-effects go away he will know its the drugs, if they don't then we will know its something else.
I have to admit I am very nervous about this, I DON'T want to have withdrawal problems.
Any ideas?
Posted by JANNBEAU on December 12, 2001, at 14:28:38
In reply to Questions, posted by melmel on December 12, 2001, at 13:11:30
> hi! i'm new to taking effexor xr and have some questions. i usually wake up at 3am and can't go back to sleep. should i take it in the morning instead of at night? i'm taking 3 pills a day (225 mg), should i split the dosage? any help or tips would be great. thanks!
That's the way I was, too--at first. I set a clock and took mine about five or six hours before I wanted to wake up (usually set clock for about 2:00 A.M.). Did this for ab't three weeks, then gradually worked backwards til I could take them just before bedtime.
Posted by Elizabeth on December 12, 2001, at 15:29:04
In reply to Re: Effexor an opiate? » dhldn, posted by JANNBEAU on December 12, 2001, at 11:53:16
> By the way, in the U.S., Ultram is NOT yet a controlled substance (although there are rumors that the FDA is moving that way--I figured out the narcotic properties of tramadol by reading the literature on the drug).
It's true; Ultram is an opioid agonist, albeit a very weak one. I think it will probably be placed in Schedule IV. (BTW: "narcotic" really is more of a legal term than a medical one and probably isn't appropriate to use in a medical context because of its ambiguity.)
> Is it possible that tramadol has some sort of "mixed" profile in that the parent drug may act primarily on serotonin, norepinephrine, and, perhaps, dopamine, while the principal metabolite has a higher affinity for the mu opioid receptors?
I don't know what contributions are made by tramadol itself vs. O-desmethyltramadol (M1), but Ultram does have weak effects on serotonin and norepinephrine reuptake (I've never seen anything suggesting it's also a dopamine reuptake inhibitor). It's unclear how clinically significant these effects are, however.
> Certainly, pain relief from tramadol seems to be delayed for several hours (6 hrs--the time it takes to get significant AUC for principal metabolite?).
The reports that I've heard have suggested it's more like three hours. Still quite a delay, though.
> If anything is deceiving, it is that the manufacturer of tramadol has claimed for five years that tramadol (Ultram in the U.S.) is not addictive! We've heard that one before, haven't we?
< g > Did you know that heroin was originally (when it was marketed as a cough syrup) supposed to be a less addictive form of morphine?
Personally, I don't get any mood elevation from tramadol at the doses that are accepted as safe. FWIW.
> You might not remember the hype when DARVON was first approved, but I do (I'm old!).
Yeah, you're really dating yourself here! :-)
> I resent it that I received NONE of this information for Effexor (venlafaxine) OR tramadol prescribed concomitantly.
I really doubt that Effexor is an opioid (or if it is, it's probably *extremely* weak), although it might be interesting to try to find out for sure. But there is a risk (of the "serotonin syndrome") when Effexor or SSRIs are prescribed with tramadol -- generally the combination isn't recommended. Again, this applies to SSRIs (and MAOIs, for that matter), not just Effexor. It definitely does not mean that Effexor is an opioid.
> I WOULD like to state that I noticed an immediated and dramatic reduction in my pain level when I started EFFEXOR XR (37.5 mg qd; I have chronic "intractable" pain from extensive degenerative changes in my cervical and thoracic spine, costochondral joints, knees, etc).
A lot of ADs relieve pain (tricyclics were the first ones used for this); it doesn't mean they're opioids. Nardil relieved my back pain completely for the entire time I was taking it. I didn't notice the effect (the pain has had a relapsing and remitting course) until I stopped taking Nardil the second time and the pain came back with a vengeance immediately.
> The structure and opiod [sic] properties of Effexor may, also, account for the stories of difficulty discontinuing Effexor.
No. Effexor withdrawal symptoms are not similar to opioid withdrawal. They do, however, resemble the withdrawal symptoms that are often reported with SSRIs (especially Paxil, but also sometimes others).
> The signs and symptoms are strangely similar to those of any narcotic withdrawal syndrome, are they not?
What withdrawal symptoms associated with Effexor do you think are similar to opioid withdrawal? I haven't heard of any such thing.
-elizabeth
Posted by Elizabeth on December 12, 2001, at 15:31:57
In reply to Questions, posted by melmel on December 12, 2001, at 13:11:30
> i'm new to taking effexor xr and have some questions. i usually wake up at 3am and can't go back to sleep. should i take it in the morning instead of at night?
Yes, that's a good idea.
> i'm taking 3 pills a day (225 mg), should i split the dosage?
If you're taking regular Effexor (tablets), you might want to ask about Effexor XR. It's better suited to higher doses, as it can be taken once a day (most people do better taking it in the morning).
-elizabeth
Posted by melmel on December 12, 2001, at 15:56:29
In reply to Re: Questions, posted by Elizabeth on December 12, 2001, at 15:31:57
i am taking the xr. i think i will try taking it in the morning. thanks!
> > i'm new to taking effexor xr and have some questions. i usually wake up at 3am and can't go back to sleep. should i take it in the morning instead of at night?
>
> Yes, that's a good idea.
>
> > i'm taking 3 pills a day (225 mg), should i split the dosage?
>
> If you're taking regular Effexor (tablets), you might want to ask about Effexor XR. It's better suited to higher doses, as it can be taken once a day (most people do better taking it in the morning).
>
> -elizabeth
Posted by JANNBEAU on December 12, 2001, at 16:57:04
In reply to Re: Effexor an opiate? Probably not. » JANNBEAU, posted by Elizabeth on December 12, 2001, at 15:29:04
Hello, Elizabeth. WELL! I have to say, your posting upset me rather much. With respect, I was responding to a posting by dldh (I think) who purports to be a D. Psych (what ever that is) named Gillman: Here's a copy of his posting. It was posted on 12/12/01, but I cannot find it right now). Anyway, maybe you can see whence I speak. I will respond to your specific comments below after the quote.
From Dr. Gillman's posting:
"It is concerning that venlafaxine has a close structural similarity to tramadol (a new narcotic analgesic). There is evidence that it has analgesic effects that are blocked by naloxone; that suggests it may be acting partly as an opioid drug.
>
> It seems that venlafaxine may be particularly prone to interact with MAOIs and thus be implicated in fatal serotonin syndrome reactions.
>
> Venlafaxine, when used in larger doses of over ~150 mg, may cause hypertension in some people, another problem that requires monitoring and may debar its use in some patients.
>
> What the place of venlafaxine should be at lower doses (i.e. up to ~150 mg) in primary care is hard to judge. It shares the low interaction propensity (via CYP450) of sertraline and citalopram; but at lower doses probably has no particular advantages and is much more toxic in over-dose than any of the SSRIs or even than some of the old tricyclic antidepressants.
>
> It behooves us all to be especially cautious about drugs when there is uncertainty over the mechanism of their action. Venlafaxine's toxicity in over-dose and its similarities to the narcotic analgesic 'tramadol' warrant close monitoring and caution.
>
> My evaluation of the current evidence is that venlafaxine should be used sparingly in primary care settings with care and due recognition of the uncertainties surrounding it; whether it will prove suitable as a treatment for generalised anxiety disorder may become a contentious issue.
>
> History repeatedly demonstrates that new is not always better. History is repeatedly ignored.
>
>
> The FDA have now officially amended the product information on venlafaxine (2000) as follows:--
>
> Discontinuation symptoms have been systematically evaluated in patients taking venlafaxine.... Abrupt discontinuation or dose reduction... is associated with the appearance of new symptoms, the frequency of which is increased at higher doses and with longer duration of treatment.
> Reported symptoms:--
> agitation, anorexia, anxiety, confusion, coordination impaired, diarrhea, dizziness, dry mouth, dysphoric mood, fasciculation, fatigue, headaches, hypomania, insomnia, nausea, nervousness, nightmares, sensory disturbances (including shock-like electrical sensations), somnolence, sweating, tremor, vertigo, and vomiting.
> It is therefore recommended that the dosage of Effexor be tapered gradually and the patient monitored. The period required for tapering may depend on the dose, duration of therapy and the individual patient.
>
> Subscribe to 'Psychopharmacology update notes' to see a fuller analysis and references."
>
That's the end of Dr. Gillman's (??--interesting similarity to the great Gilman of "Goodman and Gilman" Pharmacotherapy"--
> > By the way, in the U.S., Ultram is NOT yet a controlled substance (although there are rumors that the FDA is moving that way--I figured out the narcotic properties of tramadol by reading the literature on the drug).O-desmethyltramadol, according to my sources, has an affinity for mu opioid receptors that is about six times greater than that of the parent compound. It is interesting to note that the pain-relief associated with tramadol occurs around the time the o-desmethyltramadol reaches a "therapeutic" level in the bloodstream. This is presumptive evidence that the primary action of the o-desmethyltramadol is that of an opioid. I have found this factoid in the literature and, if I am NOT WRONG, which I well may be, since I am working from memory here, the manufacturer, McNeil actually states that the analgesic activity may be related, in part, at least, to M1 activity at the mu receptor.
>
> It's true; Ultram is an opioid agonist, albeit a very weak one. I think it will probably be placed in Schedule IV. (BTW: "narcotic" really is more of a legal term than a medical one and probably isn't appropriate to use in a medical context because of its ambiguity.)
>
According to Stedman's Medical Dictionary, 27th edition, Lippincott Williams & Wilkins, Philadelphia, 2000, page 1182, and I quote: "Narcotic 1. Originally, any drug derived from opium or opium-like compounds with potent analgesic effects associated with both significant alteration of mood and behavior and potential for dependence and tolerance. 2. More recently, any drug, synthetic or naturally occurring, with effects similar to those of opium and opium derivatives, including meperidine and fentanyl and its derivatives. 3. Capable of inducing a state of stuporous analgesia [from the Greek: narkotikos, benumbing]." In none of these definitions is there ANY mention of a medico-legal definition of "narcotic analgesic". Therefore, although I see your point, as a pharmacologist/toxicologist, I don't agree with your definition. I am not a lawyer--so I don't know the subtle legalese. Note that Gillman uses the term "narcotic analgesic" in the same way I meant it to be taken!
> > Is it possible that tramadol has some sort of "mixed" profile in that the parent drug may act primarily on serotonin, norepinephrine, and, perhaps, dopamine, while the principal metabolite has a higher affinity for the mu opioid receptors?
>
> I don't know what contributions are made by tramadol itself vs. O-desmethyltramadol (M1), but Ultram does have weak effects on serotonin and norepinephrine reuptake (I've never seen anything suggesting it's also a dopamine reuptake inhibitor). It's unclear how clinically significant these effects are, however.
>
Don't hold your breath with regard to specificity!> > Certainly, pain relief from tramadol seems to be delayed for several hours (6 hrs--the time it takes to get significant AUC for principal metabolite?).
>
> The reports that I've heard have suggested it's more like three hours. Still quite a delay, though.
>
Three, six, whatever--probably depends upon the individual's metabolic capacity to convert tramadol to o-desmethyltramadol. Whatever--I need relief within 30 minutes, as with the well-accepted opioids that I take: hydrocodone (5 mg 2X per day) or Darvocet (2 tabs at bedtime). At LEAST, someone could have told me the analgesic effects are delayed. Also indicates, in my humble opinion, that tramadol cannot be relied upon to give acute relief, as one would have to keep a certain blood level of M1 to retain the analgesic effects, implying regular dosing. I often take no medication until I hurt really badly because I don't think of it if I am not hurting..> > If anything is deceiving, it is that the manufacturer of tramadol has claimed for five years that tramadol (Ultram in the U.S.) is not addictive! We've heard that one before, haven't we?
>
> < g > Did you know that heroin was originally (when it was marketed as a cough syrup) supposed to be a less addictive form of morphine?
>
Yes, I was fully aware of this!
> Personally, I don't get any mood elevation from tramadol at the doses that are accepted as safe. FWIW.
>
I have noticed that tramadol (as well as hydrocodone and codeine) wake me up. I, therefore, would take these drugs only in the daytime, reserving Darvocet, which does NOT give me insomnia nor does it give me nightmares (hydrocodone and oxycodone both do).> > You might not remember the hype when DARVON was first approved, but I do (I'm old!).
>
> Yeah, you're really dating yourself here! :-)
>
> > I resent it that I received NONE of this information for Effexor (venlafaxine) OR tramadol prescribed concomitantly.
>
> I really doubt that Effexor is an opioid (or if it is, it's probably *extremely* weak), although it might be interesting to try to find out for sure. But there is a risk (of the "serotonin syndrome") when Effexor or SSRIs are prescribed with tramadol -- generally the combination isn't recommended. Again, this applies to SSRIs (and MAOIs, for that matter), not just Effexor. It definitely does not mean that Effexor is an opioid.
>
I did not mean to imply that Effexor is a known opioid, but it does have a structure similar to that of tramadol (see the posting above from a Dr. Gillman (cannot find it in postings or I'd just refer you) below that I've pasted into this one). If structure-activity relationships mean anything, then the effects of both drugs may be similar, may have an additive effect, or even a synergistic effect. (I do realize that they might antagonize each other, too. I've had quite a bit of pharmacology and toxicology in my long life; however, antagonism was not my experience!)
> > I WOULD like to state that I noticed an immediated and dramatic reduction in my pain level when I started EFFEXOR XR (37.5 mg qd; I have chronic "intractable" pain from extensive degenerative changes in my cervical and thoracic spine, costochondral joints, knees, etc).
>
> A lot of ADs relieve pain (tricyclics were the first ones used for this); it doesn't mean they're opioids. Nardil relieved my back pain completely for the entire time I was taking it. I didn't notice the effect (the pain has had a relapsing and remitting course) until I stopped taking Nardil the second time and the pain came back with a vengeance immediately.
>
I am aware of the analgesic effects of AD's--at doses much lower than those used for the AD effects--and I am certainly aware that antidepressants are not classed as opioids. In fact, most are more closely related, at least in activity, to the amphetamines. Again, I caution: Don't rely too heavily on the so-called "specificity" of any drug, especially those that act on CNS receptors.Did you know that the tricyclics are very similar to many older antihistamines? In fact, did you know that the tricyclic AD's were discovered by people researching antihistiminic effects? The discovery of tricyclics was, thus, serendipitous, as are the discoveries of many therapeutic modalitie and/or alternative uses for medications.
> > The structure and opioid properties of Effexor may, also, account for the stories of difficulty discontinuing Effexor.
>
> No. Effexor withdrawal symptoms are not similar to opioid withdrawal. They do, however, resemble the withdrawal symptoms that are often reported with SSRIs (especially Paxil, but also sometimes others).
>
> > The signs and symptoms are strangely similar to those of any narcotic withdrawal syndrome, are they not?
>
> What withdrawal symptoms associated with Effexor do you think are similar to opioid withdrawal? I haven't heard of any such thing.
>
So what are the differences? I looked up opiod withdrawal symptoms and came up with: nervousness; sweating; nightmares; shaking chills; insomnia; somnolence; memory lapses; cognitive dysfunction, diarrhea, vomiting, nausea, anxiety, dysphoria; fatigue; hypomania; etc.These following signs/symptoms of Effexor withdrawal are published in the physician's insert for this drug. I quote from Gillman's posting (above): agitation, anorexia, anxiety, confusion, coordination impaired, diarrhea, dizziness, dry mouth, dysphoric mood, fasciculation, fatigue, headaches, hypomania, insomnia, nausea, nervousness, nightmares, sensory disturbances (including shock-like electrical sensations), somnolence, sweating, tremor, vertigo, and vomiting. At any rate, I certainly got these signs/symptoms from combining tramadol and venlafaxine.
So, again, I ask you, just what are the differences?. There may be subtle gradations in the manifestations of withdrawal dependent upon the drug in question, but both constitute a strikingly similar withdrawal syndrome (withdrawal, by the way, is a nonspecific term associated with any syndrome precipitated by abrupt cessation of any drug to which the body has become habituated. In most instances, one would find it difficult, perhaps, to distinguish what the patient was withdrawing from simply by observing him/her. One would be far better in today's world at least if one knows what drug the patient has been taking. Drug history IS important).
Forgive any typos (as in opiod for opioid) in my earlier posting. I don't have time to check everything. In fact, I probably should not be drawn into these discourses as I don't know the qualifications of those to whom I write.
Cheers,
JANNBEAU> -elizabeth
Posted by ArtChee on December 12, 2001, at 19:49:50
In reply to Re: withdrawal, posted by Cam W. on April 12, 2000, at 19:27:33
Cam -- You seem somewhat knowledgeable about the withdrawal aspects of EFFEXOR. I was prescribed Effexor two years ago for long term, chronic depression. Started the graduated dosages up to 150mg/day. Stayed on it for maybe two months, & got nothing but minor, nuisance side effects. Came off gradually - no noticable problems.
Two months ago, my psychotherapist recommended trying antidepressants to supplement "talk therapy." Same psychiatrist from before recommended EFFEXOR XR in twice the dosage as the first time. Did the graduation up to 300mg/day. AGAIN, got the side effects without the 'FRONT' effects. As I graduated to the 300mg/day, I became anxious to the point of picking, with index finger nails, the quick on both thumbs, and pulling off the flicks of skin that were broken. (Nothing new, do this when experiencing anxiety. I figure it's better than an ulcer.) Have to band-aide around both thumbs to prevent them from being raw.Side effects this time are more noticable: sweats, shortness of breath, not sleeping well at night, light-headedness - wozziness, drymouth, headaches (which normally don't have), AND further depression at the fact that I am non-responsive to treatment. After 10 weeks of this, and getting worse, requested info on how to get off. Dr. prescribed 3 days at -75mg until off completely; which took 9 days.
The second day of being completely off EFFEXOR XR, I am extremely wozzy, unable to focus my attention, and pretty much non-functional: MAJOR side effects. Called the doctor, who says this is not abnormal, nor serious as it does not lead to anything more serious (providing, of course, I don't find myself in an automobile accident due to loss of mental functions.) Said to call him again in a couple of days if it doesn't subside.
With all due respect, most of what he has told me to this point has been inaccurate IN MY CASE. My question here - to CAM, or anyone else with any experience or knowledge of withdrawal effects of coming off 300mg of EFFEXOR XR is: can these symptoms subside in a week? ...after being on the medication - that takes 2 to 4 weeks to take affect - for 10 or more weeks??
Posted by Elizabeth on December 12, 2001, at 22:52:26
In reply to Re: Effexor an opiate? Probably not. » Elizabeth, posted by JANNBEAU on December 12, 2001, at 16:57:04
> Hello, Elizabeth. WELL! I have to say, your posting upset me rather much.
I'm sorry, although I have a hard time understanding why you're so upset about it. I certainly didn't mean anything personally, even though I might have been critical of what you said.
(BTW, I did indeed read dhldn's post, and I posted a brief direct reply. I think it's a mistake to conclude that since venlafaxine and tramadol have some structural similarity, venlafaxine must be an opioid, or even that it's especially likely that it is. You can read my response at http://www.dr-bob.org/babble/20011202/msgs/86335.html. dhldn listed some potential dangers of Effexor and seemed to be jumping to the conclusion that Effexor is an opioid.)
I think it's important to recognize that we don't know everything about the pharmacologic mechanisms of *any* of the drugs we use -- not just Effexor. All drugs may have effects we don't know about. At the same time, we know how to screen for affinities for various receptors, and it's likely that most drugs available today have been tested for opioid receptor affinity. Now, it's possible that if a drug company doesn't want to know that a drug they have is an opioid, they could do a very cursory test and accept the negative finding from that test. I think, though, that Effexor has been around long enough that if it were an opioid, this would have been discovered by now.
> O-desmethyltramadol, according to my sources, has an affinity for mu opioid receptors that is about six times greater than that of the parent compound.
Actually, I went ahead and looked this one up, and according to the PI, the affinity of O-desmethyltramadol (let's call it ODT for short) for mu receptors is about *200* times that of the parent compound; interestingly, the PI adds that ODT is about six times as potent an *analgesic* as tramadol. (Hard to know what to make of this.)
As for the word "narcotic," it's ambiguous. Politicians use it to mean any illegal drug; they often include cocaine and marijuana in the category "narcotics." This also makes the word politically loaded, so it's probably better to use a more neutral word, since one is available. Also, there's the question of whether drugs with partial or mixed opioid agonist activity (such as buprenorphine, butorphanol (Stadol), pentazocine (Talwin), nalbuphine (Nubain), etc.) which have little or no significant abuse potential should be considered "narcotics."
> > The reports that I've heard have suggested it's more like three hours. Still quite a delay, though.
> >
> Three, six, whatever--probably depends upon the individual's metabolic capacity to convert tramadol to o-desmethyltramadol.I meant that people I know who are taking it say it takes around three hours to work. This is acutely -- if Ultram is taken around-the-clock, allowing ODT to build up, it may take effect in an hour or less when you first take it in the morning.
> At LEAST, someone could have told me the analgesic effects are delayed.
From the PI: "Analgesia in humans begins approximately within one hour after administration and reaches a peak in approximately two to three hours." Sort of ambiguous, I agree.
> I have noticed that tramadol (as well as hydrocodone and codeine) wake me up.
All effective opioids do this to me, or at least, all the effective opioids I've taken do at the doses I've taken. (Ultram and codeine do not, which might be due to a deficiency in the enzyme cytochrome P450 2D6 -- this would lead to poor metabolism of tramadol to ODT and codeine to morphine.)
> I, therefore, would take these drugs only in the daytime, reserving Darvocet, which does NOT give me insomnia nor does it give me nightmares (hydrocodone and oxycodone both do).
Huh. Can't think of an explanation why they would have this side effect (nightmares, that is).
> > I really doubt that Effexor is an opioid (or if it is, it's probably *extremely* weak), although it might be interesting to try to find out for sure. But there is a risk (of the "serotonin syndrome") when Effexor or SSRIs are prescribed with tramadol -- generally the combination isn't recommended. Again, this applies to SSRIs (and MAOIs, for that matter), not just Effexor. It definitely does not mean that Effexor is an opioid.
> >
> I did not mean to imply that Effexor is a known opioid, but it does have a structure similar to that of tramadol (see the posting above from a Dr. Gillman (cannot find it in postings or I'd just refer you) below that I've pasted into this one). If structure-activity relationships mean anything, then the effects of both drugs may be similar, may have an additive effect, or even a synergistic effect. (I do realize that they might antagonize each other, too. I've had quite a bit of pharmacology and toxicology in my long life; however, antagonism was not my experience!)Umm, not sure what you meant by that last bit. What I'll say here is that there are *many* drugs that are structurally similar to venlafaxine, and there really isn't a reason to list them all in the PI for Effexor; noting the similarity to tramadol alone, meanwhile, would be misleading. The structural similarity to tramadol does suggest that it might be worthwhile to test venlafaxine to see if it's an opioid. If venlafaxine were shown to be an opioid, that information would be appropriate to include in the PI.
Anyway, the structural similarity is not the reason for the risk of interaction; the serotonin reuptake inhibition by both drugs is most likely to blame there. There have been a number of reports of the serotonin syndrome resulting from combinations of tramadol with SSRIs or Effexor. Most opioids don't have this problem and can be used safely with the serotonin reuptake inhibitor ADs.
> Did you know that the tricyclics are very similar to many older antihistamines?
Sure. So are the phenothiazines. Indeed, most of the tricyclics and the phenothiazines *are* antihistamines. But agani, this information (their affiniaty for H1 receptors), not their structural similarity to known antihistamines, would be appropriate to include in their PIs (it generally isn't because they are old drugs).
> So what are the differences? I looked up opiod withdrawal symptoms and came up with: nervousness; sweating; nightmares; shaking chills; insomnia; somnolence; memory lapses; cognitive dysfunction, diarrhea, vomiting, nausea, anxiety, dysphoria; fatigue; hypomania; etc.
>
> These following signs/symptoms of Effexor withdrawal are published in the physician's insert for this drug. I quote from Gillman's posting (above): agitation, anorexia, anxiety, confusion, coordination impaired, diarrhea, dizziness, dry mouth, dysphoric mood, fasciculation, fatigue, headaches, hypomania, insomnia, nausea, nervousness, nightmares, sensory disturbances (including shock-like electrical sensations), somnolence, sweating, tremor, vertigo, and vomiting. At any rate, I certainly got these signs/symptoms from combining tramadol and venlafaxine.The list from the Effexor PI is pretty exhaustive. That's not surprising since the PIs typically list every reported side effect and could be expected to do the same with withdrawal symptoms.
The most common recognized opioid withdrawal symptoms include gooseflesh; hot and cold flashes; insomnia; cramps and diarrhea; shivering; nausea and vomiting; dysphoric mood; drippy eyes and nose; dilated pupils; aches and pains; and fever. It's like having the flu. Sometimes people will have elevated pulse, respiratory rate, and/or blood pressure as well.
Common Effexor withdrawal symptoms can be found by reading about the subject in the Psycho-Babble archives. The ones I recall reading about most often are the electric-shock type sensations, nightmares and disturbed sleep, dizziness, sweating, nausea, vertigo, headaches, fatigue, tinnitus, and dysphoria. (I could be missing some, but I don't believe that all the symptoms listed in the PI are especially common.) Some of them are also common symptoms of opioid withdrawal, but the overall picture doesn't suggest that the two syndromes are related. The common symptoms (sweating, nausea, dysphoria) are pretty generic ones, too.
> In most instances, one would find it difficult, perhaps, to distinguish what the patient was withdrawing from simply by observing him/her.
Actually, there are pretty specific withdrawal syndromes for different classes of substances, although these are best defined for drugs of abuse. Opioid withdrawal is particularly specific. On the other hand, there are some withdrawal symptoms that are pretty common with various types of drugs, such as sweating, nausea, dysphoria, sleep disturbance, and fatigue. (I even had problems with nausea from discontinuing Klonopin too rapidly -- that's *not* a typical benzo withdrawal symptom.)
Anyway, I wouldn't worry about Effexor being an opioid. One thing that Effexor does have in common with opioids, though, is that its withdrawal symptoms, though very unpleasant, are not going to kill you.
-elizabeth
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