Medical Forum / General / Pharmacy / June 2004
Possible Drug interaction. Can somebody help?
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CuriousOne - 21 Jun 2004 22:18 GMT Hi,
I am having some cognitive problems. My memory is not working so well and at times, I am confused or disoriented. Also, I have nausea just about all the time.
I am 38 yrs old, male and 150lbs. My doctors cannot find anything wrong, but maybe it is a drug interaction as I am on several different medications.
Can somebody review this list and find out for me if there is any adverse affects caused by interaction?
Prozac - 80mg in the AM Straterra - 100mg in the AM Aciphex - 20mg in the AM Kadian - 20mg in the afternoon, 30mg at night Darvocet-N - 100mg at night Trazadone - 25mg at night
I have been on the pain meds for over 2 years. Prozac for over 5 years. Straterra and Trazadone, about 10 months. And Acifex is fairly new (2.5 months).
Symptoms seem to have started after my car accident 8.5 yrs ago. Memory problems mostly. Then after my spinal fusion, memory got worse and confusion set in. That was 5 yrs ago. Over the past year or so, my confusion has increased and at times, I am disoriented.
I also notice body twitching when I lay down. My legs, feet, arms, hands, fingers and whole body start twitching.
I asked my pain doctor, family doctor, and Psychiatrist about my drugs and none of them seemed to feel there was a problem there.
Thanks
Pete - 21 Jun 2004 22:57 GMT The doses of Prozac and Straterra are excessive imo. Prozac is a very potent CYP 2D6 inhibitor; and Straterra is metabolized primarily by CYP 2D6. This would create excessive levels of Straterra in your blood plasma; on the order of 3 to 5 or higher than normal possibly. The trouble lies in that the overdose symptoms of Straterra are not well known.
A very similar drug in overdose called robexetine causes effect such as
Signs and symptoms may variably include sinus tachycardia, hypertension or hypotension, diaphoresis, mydriasis, tremulousness, anxiety, agitation, and confusion. More serious intoxication may result in significant neuromuscular hyperactivity, seizures, hyperthermia, and rhabdomyolysis.
I think its fair to say your probably suffering from a straterra overdose mediated by the CYP 2D6 inhibition Prozac causes. I would discontinus the use of Straterra, and Prozac at least temporarily.
> Hi, > [quoted text clipped - 32 lines] > > Thanks Pete - 21 Jun 2004 23:05 GMT On another note, switching to an SSRI like Lexapro or Celexa, which have no significant CYP inhibiting proporties would fix your problem. Assuming your insurance wouldnt cover those, Sertraline may be a suitable substitute, as its CYP inhibiting proporties are mild.
> The doses of Prozac and Straterra are excessive imo. Prozac is a very potent > CYP 2D6 inhibitor; and Straterra is metabolized primarily by CYP 2D6. This [quoted text clipped - 49 lines] > > > > Thanks rxempress - 22 Jun 2004 16:03 GMT My theory is polypharmaceuticals. (It means too many drugs). Why all the pain medications... they can certainly cause many of the symptoms. Why Strattera and Prozac. Looking at the molecules they are very similar. Strattera is not effective on depression... if it was it could be classified as a SSRI (like prozac). There are other antidepressants which are not SSRIs and would be a lot safer than the combination of the two you are currently taking.
Are you seeing just one doctor? Who is prescribing the pain medications and why do you need so many?
Pete - 22 Jun 2004 17:48 GMT /sigh
> My theory is polypharmaceuticals. (It means too many drugs). > Why all the pain medications... they can certainly cause many of the [quoted text clipped - 6 lines] > Are you seeing just one doctor? Who is prescribing the pain medications and > why do you need so many? CuriousOne - 23 Jun 2004 03:25 GMT Thanks for the info. My straterra is 60mg, not 100 as I stated. Is that still a possible problem with 80mg of Prozac?
I was put on Prozac for depression. 80mg because of severity. Straterra is for my ADD which I am pretty certain is not actually helping.
I have a Psychiatrist for the mental meds. And a pain doctor for the pain pills. I take Kadian for chronic pain which gets really bad as the day progresses and I need the Darvocet to help me sleep along with the Trazadone.
The Acifex is for acid reflux wich I recently got as a problem. I heard that Prozac can cause ulcers and/or other stomach type problems.
My prescribing doctors do know of the other meds. I hide nothing from nobody.
I am very suicidal as well which is one reason I got up to 80mg of Prozac. Doctor did not want to switch me yet. He did try to get me to take Lamictal (as a mood stabilizer to control impulses), but I could not handle that med.
Any other opinions or information is welcome. Is anybody willing to tell me what would be a good combo of meds to take to die? I have access to a little Xanax and Sonata, a bunch of Seroquel, Lamictal, Neurontin. And the main ingredient would be the Kadian. Also, a anti-emetic may be good and I have a script for the neck patches for travel sickness.
thanks,
Pete - 23 Jun 2004 05:45 GMT Hmm, well, I would try something like this myself.
You say that Straterra is ineffective; that isnt that suprising imo. One of the primary mechanisms involved with ADHD, and Depression theoretically for both is a lack of dopamine in the straitium; and straterra does not affect that mechanism. I believe the reason that methylphinidate is more effective than straterra(amoxetine) in clinical trials is simply because it stimulates dopamine release.
None of the meds your taking address that. Straterra is probably partially effective, but not fully.
Have you tried Methylphinidate(ritalin), Amphetamine(adderall), or some other stimulant drug? In this case, they would be effective for ADHD in all odds, and also help with depression.
Considering your trouble sleeping though, a stimulant may not be ideal. I would suggest bupropion if your adverce to trying a stimulant.
Taking Bupropion(wellbutrin) and Celexa, Lexapro, or Zoloft together would probably be a very effective treatment, with less severe side effects than what you take now.
Wellbutrin - 200 mg, up dose as needed to max of 450, scale slowly. Celexa or Lexapro - Start 10mg, up to 20 if needed. Double amounts for Celexa (20 - 40) Lexapro is better than Celexa , but nearly the same drug.
If you cant get Celexa or Lexapro, Zoloft will work. Start at 50, go up to 200 if needed. At higher doses, Scale down the dose of Wellbutrin somewhat, as Zoloft will inhibit its metabolism. Prozac could be used too, but be sure to scale down the Wellbutrin dose quite a bit if you use that, as Prozac inhibits more than Zoloft does.
Neurontin may be worth trying as a mood stabilizer. Its effectiveness in this role is questionable, but it should not be too hard to tolerate side effect wise.
Check all this sh.t with your doc first :P
If your experiencing non bipolar depression, or psycosis, or mania, or anything else, it changes my recomandations somewhat.
Leave your pain meds as is.if they work ok.
And yes, I still think that the interaction between Prozac and Straterra is making the blood plasma levels of straterra way too high. 80mg of Prozac is a lot. It is the maximum dose, and if it isnt bothering you, there is no real need to decrease. Most people respond to 40mg of prozac or less. Simply put, it works like this kind of. There are only X amount of any reuptake pump for a neurotransmitter in the brain. A dose of say, 10 Mg will block, say, on average(the actual figure vaires according to patient and because of tons of factors)50 percent of the pumps. A dose of 20 Mg, will block, say, 80 percent. A 40 Mg dose, say, 95 percent. 60 Mg, 99 percent. Basically, anything above 40 is unlikley to do much good. For certain people, it can, granted. But for the large majority of the population, it wont. 80 mg wont hurt you. Hell, 300 mg probably wouldnt hurt you. But, higher doses mean more side effects, and more severe side effects.
P.P.S Now that I think of it, I see one more possibility of why your having all these side effects. Trazodone and Prozac both have effects on the serotonurgic system. High doses of Prozac, and that dose of Trazodone are likley causing serotonin syndrome.
euphoria, drowsiness, sustained rapid eye movement, overreaction of the reflexes, rapid muscle contraction and relaxation in the ankle causing abnormal movements of the foot, clumsiness, restlessness, feeling drunk and dizzy, muscle contraction and relaxation in the jaw, sweating, intoxication, muscle twitching, rigidity, high body temperature, mental status changes were frequent (including confusion and hypomania - a "happy drunk" state), shivering, diarrhea.
Serotonin syndrome seems quite possible. But what the hell do I know :P If the above really honestly sounds like you, discontinue the Trazodone and Prozac immediatly, and maybe seek some medical attention.
Therefore it is recommended that Zoloft, Prozac, Paxil, Luvox, Serzone, etc. not be used concurrently with each other or any other serotonergic drugs(Like Trazodone) and that these serious adverse reactions should be expected with these combinations
P.S. You dont wan't to die, just go have some fun; many a man has been made happy by a cheap hooker and some booze.
> Hi, > [quoted text clipped - 32 lines] > > Thanks Grassy Knoll - 23 Jun 2004 21:43 GMT > Hi, > [quoted text clipped - 10 lines] > Darvocet-N - 100mg at night > Trazadone - 25mg at night Doctors find nothing wrong and you're on these drugs? If there is nothing wrong with you then you shouldn't have to be on ANY meds.
chucks(at)pivot[dott]net - 25 Jun 2004 06:42 GMT Sadly, nobody can answer your question accurately. Read the following to learn why. Perhaps you should show it to your doctor(s).
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Presented by the author at the 2003 New England Seminar in Forensic Sciences, Colby College:
Polypharmacy: What Cost in Morbidity and Mortality?©
It is common practice in Medicine to put patients on combinations of drugs. The vast majority of these combinations of drugs (especially where 3 or more drugs are involved) have never been studied at all, let alone in double-blind trials ( with the exception of Oncology/AIDS treatment, where the toxicity of the drugs demands study); yet it is frequent practice to prescribe these multiple-drug combinations.
It is well accepted in Pharmacology that it is scientifically impossible to accurately predict the side effects or clinical effects of a combination of drugs without studying that particular combination of drugs in test subjects. Knowledge of the pharmacologic profiles of the individual drugs in question does not in any way assure accurate prediction of the side effects of combinations of those drugs, especially when they have different mechanisms of action, which is very common because polypharmacy is most often prescribed to patients with "multiple illnesses". More than 100,000 patients in this country die from identified adverse drug reactions (perhaps the 4th to 6th leading cause of death in the U.S.)3 The number who die as a consequence of polypharmacy is, to my knowledge, unknown.
The argument that the prescribing of drugs is the "Art" of Medicine is not valid in defending polypharmacy, because drugs are developed (indications, dose and administration, etc.) and approved through a "scientific" process (double-blind, placebo-controlled studies). The fact that the medicines are often prescribed for "different conditions" is irrelevant (especially to the patient's physiology). The idea that " we are doing the best we can ", a frequent defense of Polypharmacy, does not in any way uphold a scientific argument in favor of it. (We are, indeed, trying the best we can, with tools which do not improve at the rate we would wish!) The fact that "there is a limit to how much research can be done" in no way makes the research unnecessary in order to predict the side effects of specific combinations of drugs. It has been said in the past that <30% of medical practice was backed by controlled studies ¹ · ². Has this changed? How do we know? Are we looking closely enough at our way of practicing Medicine? Can the use of unstudied polypharmacy really be considered evidence-based, "scientific" Medicine?[Can the Pathology community help initiate meaningful debate regarding this subject at a level that will produce more widespread awareness?] Charles Sullivan, D.O. Waterville, ME (voluminous other references available)
>Hi, > [quoted text clipped - 32 lines] > >Thanks Pumbaa - 25 Jun 2004 13:40 GMT Often the people on poly drug theraphy are on Medicaid as they are the only ones that can afford to take a dozen drugs a momth. Very good business for the brand name pharmaceutical companies. It also seems that doctors like to use the most expensive drugs on people with insurance or Medicaid as they "don't have to pay for them!".
Recently in the State of Mississippi the State government has reduced the number of people on Medicaid. Those in the dozen Rx a month club will have a heck of a time trying to pay for their medication as the price is often more than their entire month's income. Pharmacists get stung also as they make money on Medicaid Rxs in Mississippi. Now there is a chance for someone (Pharmacists?) to use their knowledge to reduce and reevaluate the drug theraphy of these patients and to get them on medication they can actually afford. But I doubt it will ever happen.
"More than 100,000 patients in this country die from identified adverse drug reactions (perhaps the 4th to 6th leading cause of death in the U.S.)3 The number who die as a consequence of polypharmacy is, to my knowledge, unknown."
Dr.Bob - 26 Jun 2004 07:20 GMT > Often the people on poly drug theraphy are on Medicaid as they are the only > ones that can afford to take a dozen drugs a momth. Very good business for [quoted text clipped - 15 lines] > 6th leading cause of death in the U.S.)3 The number who die as a > consequence of polypharmacy is, to my knowledge, unknown." "More than 100,000 patients in this country die from identified adverse drug
> reactions (perhaps the 4th to > 6th leading cause of death in the U.S.)3 Pumbaa,,, do you have this reference? I would like to read it in it's entirety if it's not too much trouble for you.
TIA Bob
Pumbaa - 26 Jun 2004 14:34 GMT This is posted above in this thread. I did not check out the Doctor but I have heard this quote before. Give Dr. Charles Sullivan a ring for the references. I would like to send the article with refs. to the State of Mississippi Medicaid Office and the School of Pharmacy. This could be an opportunity for pharmacists and doctors to try to get people off of the drug company enriching polypharmacy wagon.
Presented by the author at the 2003 New England Seminar in Forensic Sciences, Colby College:
"Polypharmacy: What Cost in Morbidity and Mortality??
It is common practice in Medicine to put patients on combinations of drugs. The vast majority of these combinations of drugs (especially where 3 or more drugs are involved) have never been studied at all, let alone in double-blind trials ( with the exception of Oncology/AIDS treatment, where the toxicity of the drugs demands study); yet it is frequent practice to prescribe these multiple-drug combinations.
It is well accepted in Pharmacology that it is scientifically impossible to accurately predict the side effects or clinical effects of a combination of drugs without studying that particular combination of drugs in test subjects. Knowledge of the pharmacologic profiles of the individual drugs in question does not in any way assure accurate prediction of the side effects of combinations of those drugs, especially when they have different mechanisms of action, which is very common because polypharmacy is most often prescribed to patients with "multiple illnesses". More than 100,000 patients in this country die from identified adverse drug reactions (perhaps the 4th to 6th leading cause of death in the U.S.)3 The number who die as a consequence of polypharmacy is, to my knowledge, unknown.
The argument that the prescribing of drugs is the "Art" of Medicine is not valid in defending polypharmacy, because drugs are developed (indications, dose and administration, etc.) and approved through a "scientific" process (double-blind, placebo-controlled studies). The fact that the medicines are often prescribed for "different conditions" is irrelevant (especially to the patient's physiology). The idea that " we are doing the best we can ", a frequent defense of Polypharmacy, does not in any way uphold a scientific argument in favor of it. (We are, indeed, trying the best we can, with tools which do not improve at the rate we would wish!) The fact that "there is a limit to how much research can be done" in no way makes the research unnecessary in order to predict the side effects of specific combinations of drugs.
It has been said in the past that <30% of medical practice was backed by controlled studies ? ? ?. Has this changed? How do we know? Are we looking closely enough at our way of practicing Medicine? Can the use of unstudied polypharmacy really be considered evidence-based, "scientific" Medicine?[Can the Pathology community help initiate meaningful debate regarding this subject at a level that will produce more widespread awareness?]
Charles Sullivan, D.O. Waterville, ME (voluminous other references available)"
> Pumbaa,,, do you have this reference? I would like to read it in it's > entirety if it's not too much trouble for you. > > TIA > Bob
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