Phentermine Alternatives Compared
| Phentermine | Topiramate | Adipex-P |
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| Phentermine | Topiramate | Adipex-P (phentermine) |
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Prescription only
Phentermine may be used short-term as an aid to weight loss; however, it can be addictive and tolerance may develop to its weight-losing effects, rendering it less effective with time. Prescribed for... View more |
Prescription only
Topiramate may be prescribed either alone or in combination with other medications for the treatment of certain types of epilepsy, or it may be given for the prevention of migraines. Drowsiness is a... View more |
Prescription only
Prescribed for Weight Loss (Obesity/Overweight). Adipex-P may also be used for purposes not listed in this medication guide. |
Related suggestions Weight Loss (Obesity/Overweight)
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| More about Phentermine | More about Topiramate | More about Adipex-P (phentermine) | ||||||||||||||||||||||||
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| Ratings & Reviews | ||||||||||||||||||||||||||
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Phentermine has an average rating of 8.7 out of 10 from a total of 2997 ratings on Drugs.com. 84% of reviewers reported a positive effect, while 5% reported a negative effect. |
Topiramate has an average rating of 6.3 out of 10 from a total of 1314 ratings on Drugs.com. 51% of reviewers reported a positive effect, while 29% reported a negative effect. |
Adipex-P has an average rating of 8.9 out of 10 from a total of 609 ratings on Drugs.com. 86% of reviewers reported a positive effect, while 4% reported a negative effect. |
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See also: phentermine side effects in more detail. |
See also: topiramate side effects in more detail. |
See also: Adipex-P side effects in more detail. |
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| Pricing and Coupons * Prices are without insurance | ||||||||||||||||||||||||||
View all phentermine prices |
View all topiramate prices |
View all Adipex-P prices and generic prices |
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| Brand Names | ||||||||||||||||||||||||||
| Adipex-P, Atti-Plex P, Lomaira | Eprontia, Qudexy XR, Topamax, Trokendi XR | Other phentermine brands include: Atti-Plex P, Lomaira | ||||||||||||||||||||||||
| Half Life The half-life of a drug is the time taken for the plasma concentration of a drug to reduce to half its original value. | ||||||||||||||||||||||||||
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20 hours |
56 hours |
20 hours |
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| CSA Schedule ** View glossary of terms | ||||||||||||||||||||||||||
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Some potential for abuse
Has a low potential for abuse relative to those in schedule 3. It has a currently accepted medical use in treatment in the United States. Abuse may lead to limited physical dependence or psychological dependence relative to those in schedule 3. |
Not a controlled drug
Is not subject to the Controlled Substances Act. |
Some potential for abuse
Has a low potential for abuse relative to those in schedule 3. It has a currently accepted medical use in treatment in the United States. Abuse may lead to limited physical dependence or psychological dependence relative to those in schedule 3. |
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| Pregnancy Category | ||||||||||||||||||||||||||
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Category X
Not for use in pregnancy
See the full pregnancy warnings document. |
Category D
Positive evidence of risk
See the full pregnancy warnings document. |
Category X
Not for use in pregnancy
See the full pregnancy warnings document. |
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| Drug Interactions | ||||||||||||||||||||||||||
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A total of 174 drugs are known to interact with phentermine:
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A total of 285 drugs are known to interact with topiramate:
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A total of 174 drugs are known to interact with Adipex-P:
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| First Approval Date | ||||||||||||||||||||||||||
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August 14, 1973 |
December 24, 1996 |
October 22, 1980 |
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| WADA Class View World Anti-Doping Agency classifications. | ||||||||||||||||||||||||||
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N/A |
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| Related Treatment Guide | ||||||||||||||||||||||||||
** The Controlled Substances Act (CSA) schedule information displayed applies to substances regulated under federal law. There may be variations in CSA schedules between individual states.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.