side effects, dosage, reviews, how to take & discontinue, uses, pros & cons, and more
Table of Contents (hide)
- 1. Other US brand names & branded generic names1
- 2. FDA Approved Uses of Tegretol (carbamazepine):
- 3. Tegretol’s Off-Label Uses
- 4. Tegretol’s pros and cons
- 5. Tegretol’s Side Effects
- 6. Interesting Stuff Your Doctor Probably Won’t Tell You
- 7. Dosage and How to Take Tegretol
- 8. How Long Tegretol Takes to Work
- 9. Tegretol’s Half-Life & Average Time to Clear Out of Your System
- 10. Days to Reach a Steady State
- 11. Shelf Life
- 12. How to Stop Taking Tegretol
- 13. Comments
- 14. Overseas trade names and branded generic names1
- 15. Tegretol Ratings, Reviews, & Other Sites of Interest
- 16. References
|US brand name: Tegretol|
|Generic name: carbamazepine|
- Vanilla-flavored syrup
- Chewable tablets
- Extended-release tablets, most of which you don’t digest. The remnants really are supposed to come out the other end undigested.
- Equetro - is Shire’s brand of carbamazepine that is a combination of immediate and extended release.
1. Other US brand names & branded generic names1
Equetro, Carbatrol, Atretol, Convuline, Epito, Macrepan
Complex partial, generalized tonic-clonic and mixed pattern seizures. Monotherapy? Used with other meds? Sure, whatever. Unlike most anticonvulsants/antiepileptic drugs there’s nothing in the PI sheet about that. Since Tegretol has been on the US market since 1968 my money is on its being approved to take it by itself or with other meds to treat any type of epilepsy you got.
Tegretol is also approved to treat trigeminal neuralgia. There are other treatments, but Tegretol is considered the best available. Glossopharyngeal neuralgia is included under the approval for trigeminal neuralgia, but the wording is vague:
Beneficial results have also been reported in glossopharyngeal neuralgia. —Tegretol PI sheet
That looks like one of those quasi-approvals, where a condition is so bad that no one with any ethics is going to give anyone a placebo in a double-blind clinical trial, but there’s nothing else on the market to use as an active placebo.
Approved in Canada, but not the US, to be used in combination with other meds to treat bipolar disorder, or by itself if other meds don’t work. It’s not approved as a first-line treatment for bipolar disorder, even though other meds fare marginally better in the studies. Here’s one such study showing lithium just beating out Tegretol.
Shire’s combination of immediate- and extended-release carbamazapine is approved in the US to treat acute manic and mixed episodes as part of Bipolar 1 by itself. Other than its name, composition and approval, there’s not much difference between Tegretol and Equetrol.
3. Tegretol’s Off-Label Uses
- Diabetic neuropathy
- Augmenting the treatment of schizophrenia & schizoaffective psychoses
- Intermittent explosive disorder and other rage disorders (sorta kinda effective)
- Alcohol withdrawal syndrome (along with lorazepam)
- Benzodiazepine withdrawal
Having been around forever, the effects and side effects are well known. The only anticonvulsant approved for a mixed-bag of seizures. As Equetro It has FDA approval to treat bipolar, in case you’re stuck with a government or insurance formulary.
Some of the side effects truly suck donkey dong! You need to have regular blood tests. It’s especially sensitive to food, booze and alcohol. It’s great for mania, but otherwise not really all that good for bipolar disorder by itself.
Those common for anticonvulsants. Nausea is very common when starting Tegretol. Like all meds that focus on your temporal lobe, you’ll feel tired, confused, uncoordinated, even somewhat drunk and disoriented. You’ll have problems with your memory, have a hard time thinking and things will just seem really strange. For the most part these will pass, or at least they won’t be so bad, within a couple of weeks. Or a month. And, of course, they’ll come back when your dosage goes up. But they usually won’t be as bad or last as long the next time around. Unless you’re getting way more Tegretol than you should be.
Photosensitivity. While all anticonvulsants and antipsychotics make you more sensitive to sunlight, Tegretol is the worst when it comes to this side effect. It figures that any med good for treating pain will turn around and give nasty headaches to anyone who doesn’t have them to start with.
Growing a lot more body hair and being able to get drunk off of water (frank water intoxication - AKA awesome rock’n’roll name).
- If you’re taking the XR version your doctor or pharmacist really should tell you that you’re going to poop out the outer coating. That’s normal. Whatever you do, don’t cut the damn things up!!
- Smoking initially increases Tegretol’s plasma levels, so if you smoke you’ll be better off starting at the lower dosages. But since nicotine is also an enzyme inducing drug it will just require you to ultimately hit the maximum dosage of Tegretol and reach it sooner, as you’ll start to clear it out of your system faster.
- Occasionally drinking alcohol increases the plasma level of Tegretol, which is just weird. Booze + AEDs and what they are used to treat (bipolar disorder and epilepsy) is a pretty stupid idea though.
- As an enzyme-inducing AED, Tegretol will sap your body of vitamin D, folic acid, and maybe even calcium. So ask your doctor about tests for vitamin D and calcium levels and supplements. You should probably take 400–1,000mcg of folic acid in any event, but no more than that, otherwise it might interfere with how well Tegretol works. That folic acid may help you feel a lot less lethargic.
I Forgot Why I Cake Topamax
For epilepsy and bipolar disorder you start at 100–200mg a day and increase by 100–200mg a day, taking two or three doses a day (if you take the extended or immediate release) until the symptoms abate, you max out at 1200mg a day, a blood test tells you to quit, or you can’t deal with the side effects. The soonest you should increase your dosage is a week.
For neuralgia the immediate release form is recommended. Starting at 200mg a day, divided into two 100mg doses. Symptoms should be relieved somewhere between 200 and 800mg a day.
Usually by the time you find the right dosage for you that’s somewhere between 400 and 1200mg a day. So that’s anywhere from one week to three months.
Because it’s an enzyme-inducing drug, the half-life is really hard to pin down. It’s somewhere in the neighborhood of 16–24 hours, but if you take other meds that’s subject to change.
Usually a week, but there are far too many variables involved with enzyme-inducing drugs.
- Tablets: 3 years
- Chewable tablets: 5 years
- Suppositories: 3 years
- Extended-release tablets: 3 years
- Vanilla-flavored syrup: 3 years, per the New Zealand Data Sheet
Your doctor should be recommending that you reduce your dosage by 100–200mg a day every five days, based on the 16–24 hour half-life, if not more slowly than that.
Like any anticonvulsant, if you’ve been taking Tegretol for more than a couple months and you’re up to or above 400mg a day (give or take, depending on other meds you might be taking) you just can’t stop cold turkey if you’re not at the therapeutic dosage for another anticonvulsant that you know works for you, otherwise you risk partial-complex, absence seizures or even tonic-clonic (AKA grand mal) seizures, despite your never having had a seizure disorder before! The risk is worse if you’re taking a lithium variant, and many other antidepressants, especially Wellbutrin.
I sarcastically refer to Tegretol as the manliest of the AEDs/ACs. Wait. What? For some strange quirk of pharmacokinetics you get more out of Tegretol if taken with high fat meals, the occasional shot of booze (again: never a good idea) or cigar. Tegretol totally clobbers the efficacy of oral contraceptives and other estrogen supplements, and it really does a number on Lamictal - the diva of anticonvulsants. That’s manly in my book!
Tegretol has long been considered a first-line medication for bipolar disorder, but as you can see from the FDA approval, and from a few studies it’s not really that great a med for bipolar.
Unlike other anticonvulsants used for pain relief, how Tegretol works for pain is more-or-less understood, as it stimulates the infraorbital nerve. That, in turn, helps to lessen the pain involved in glossopharyngeal neuralgia and trigeminal neuralgia.
Unless Trileptal has failed for you or just isn’t available where you live, it’s usually a better first choice if Tegretol is indicated. It has a lower side effect profile and generally a better response rate - mainly because the side effects suck less and people are more med compliant. The jury is still out as to whether or not Trileptal really is just as effective as Tegretol or not. Tegretol is the superior med when it comes to neuropathic pain, so don’t bother trying anything else first if you’d rather cut off your head than live another day with whatever form of neuropathic pain you have.
Like other anticonvulsants, Tegretol (carbamazepine) carries the rare but possible risk for aplastic anemia and agranulocytosis. Unlike the others, the risk with Tegretol is great enough that regular blood tests are recommended. So if you see lots of weird bruises that you can’t explain, see your doctor immediately! Better yet, make sure your doctor orders a regular blood count before hand. And if your doctor doesn’t, lots of places cater to hypochondriacs these days where you can walk in off the street and order a CBC (complete blood count) yourself for around $20. It’s worth doing once a month and bringing the numbers in to an M.D. you trust for interpretation.
14. Overseas trade names and branded generic names1
- Apo-Carbamazepine (Canada; Malaysia)
- Camapine (Taiwan; Thailand)
- Carbadac (Benin; Burkina Faso; Ethiopia; Gambia; Ghana; Guinea; Ivory Coast; Kenya; Kuwait; Liberia; Libya Lebanon; Malawi; Mali; Mauritania; Mauritius; Morocco; Niger; Nigeria; Oman; Qatar; Republic of Yemen; Saudi Arabia; Senegal; Seychelles; Sierra Leone; South Africa; Sudan; Syria; Tanzania; Tunisia; Uganda; United Arab Emirates; Zambia; Zimbabwe)
- Carbatol (India)
- Carbazene (Thailand)
- Carbazep (Mexico)
- Carbazina (Mexico)
- Carmaz (India)
- Carpaz (South Africa)
- Carzepin (Malaysia)
- Carzepine (Thailand)
- Clostedal (Mexico)
- Degranol (South Africa)
- Epileptol, Epileptol CR (Korea)
- Eposal Retard (Colombia)
- Espa-lepsin (Germany)
- Foxalepsin, Foxalepsin Retard (Germany)
- Hermolepsin (Sweden)
- Karbamazepin (Sweden)
- Kodapan (Japan)
- Lexin (Japan)
- Mazetol (India; Malaysia)
- Neugeron (Costa Rica; Dominican Republic; Guatemala; Honduras; Mexico; Nicaragua; Panama)
- Neurotol (Finland)
- Neurotop (Austria; Hungary; Malaysia)
- Neurotop Retard (Malaysia)
- Nordotol (Denmark; Mexico)
- Panitol (Thailand)
- Sirtal (Germany)
- Tardotol (Denmark)
- Taver (Thailand)
- Tegol (Taiwan)
- Tegretal (Germany)
- Telesmin (Japan)
- Temporol (Bulgaria; South Africa)
- Temporal Slow (Bahrain; Cyprus; Egypt; Hungary; Iran; Iraq; Israel; Jordan; Kuwait; Lebanon; Libya; Oman; Qatar; Republic of Yemen; Saudi Arabia; Syria; United Arab Emirates)
- Teril (Australia; Hong Kong; Israel; New Zealand; Taiwan)
- Timonil, Timonil Retard (Germany; Israel; Switzerland)
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Get all critical about Tegretol
Rating 2.8 out of 5 from 51 criticisms.
Vote Distribution: 12 – 3 – 4 – 5 – 12 – 15
If you’re still feeling judgmental as well as just mental2, please boost or destroy my self-confidence by honestly (and anonymously) rating this article on a scale of 0 to 5. The more value-judgments the better, even if you can criticize my work only once.
Get all judgmental about the Tegretol (carbamazepine) Synopsis
Vote Distribution: 2 – 0 – 1 – 5 – 9 – 15
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15.3 Full US PI sheet, Global SPCs & PILs, Other Consumer Review & Rating Sites, check for drug-drug interactions
It’s always a good idea to check for drug-drug interactions yourself. Just because most people in the crazy meds business know about really important interactions (e.g. MAOIs and a lot of stuff, warfarin and everything on the planet) doesn’t mean the person who prescribed your meds told you about them, or the pharmacist has all the meds you take at their fingertips like they’re supposed to. Or they have the time to do their jobs properly when not dealing with complete idiots or playing Angry Farmers on the Faecesbooks.
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If you have any questions not answered here, please see the Crazymeds Tegretol discussion board.
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PDR: Physicians’ Desk Reference 2010 64th edition
Instant Psychopharmacology 2nd Edition Ronald J. Diamond M.D. © 2002. Published by W.W. Norton
The Complete Guide to Psychiatric Drugs Edward Drummond, M.D. © 2000. Published by John Wiley & Sons, Inc.
The Bipolar Disorder Survival Guide David J. Miklowitz, Ph.D © 2002. Published by The Guilford Press.
Mosby’s Drug Consult 2007 (Generic Prescription Physician’s Reference Book Series) © 2007 An imprint of Elsevier.
1) A generic drug produced by a generics manufacturer that is a wholly-owned subsidiary of the company that makes the branded version. E.g. Greenstone Pharmaceuticals makes gabapentin, and they are owned by Pfizer, who also own Parke-Davis, the makers of Neurontin.
2) A branded generic is also a generic drug given a 'brand' name by the manufacturer (e.g. Teva's Budeprion), but otherwise has the same active ingredient as the original branded version (Wellbutrin).
3) A branded generic is also a generic drug given a 'brand' name by the manufacturer (e.g. Sanofi-Aventis' Aplenzin, which is bupropion hydrobromide) and uses a salt of the active ingredient that is different from the original branded version and other generics (Wellbutrin, Budeprion and all the others are bupropion hydrochloride). We aren't sure if that really makes a difference or not. The FDA says they're the same thing. As usual, the data are contradictory, but most evidence indicates that the FDA is right and the differences are negligible.
For our purposes a "branded generic name" refers to the second and third definitions.
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If you have any questions not answered here, please see the Crazymeds Tegretol discussion board. We welcome criticisms of the articles, notifications of bad links, site problems, consumer experiences with medications, etc. I’m not always able to write back. Hence I never answer questions about meds via e-mail that are answered by this or other articles. Especially if they have been repeatedly asked on the forum. That’s why we write these damn things. Questions about which meds are best for your condition should also be asked on the forum; because this is a free site, so the price of admission is making things easier for somebody else searching for the same answer. We don’t deal with children on the forum or in private because after doing this for ten years I don’t have the emotional stamina to deal with kids who have brain cooties. How to contact Crazymeds. — Jerod Poore, CME, Publisher Crazymeds (crazymeds.us)
|Last modified on Wednesday, 26 March, 2014 at 05:21:40 by SomeMedCritic||Page Author Jerod Poore||Date created|
|“Tegretol (carbamazepine): a Synopsis for the Educated Consumer.” by Jerod Poore is copyright © Jerod Poore||Published online 2011/03/15|
|Citation options to copy & paste into your article:|
|Plain text:||Poore, Jerod. “Tegretol (carbamazepine): a Synopsis for the Educated Consumer.” Crazymeds (crazymeds.us). ().|
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1 While there are plenty of books to help you with hypochondria, for some reason there’s not much in the way of websites. Then again, staying off of the Internet is a large part of curing/managing the disorder.
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