Comparing Contrave vs Phentermine
| Contrave | Phentermine |
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| Contrave (bupropion / naltrexone) | Phentermine |
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Prescription only
Prescribed for Weight Loss (Obesity/Overweight). Contrave may also be used for purposes not listed in this medication guide. |
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 |
Related suggestions Weight Loss (Obesity/Overweight)
Popular comparisons
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| More about Contrave (bupropion / naltrexone) | More about Phentermine | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Contrave has an average rating of 6.6 out of 10 from a total of 1980 ratings on Drugs.com. 56% of reviewers reported a positive effect, while 25% reported a negative effect. |
Phentermine has an average rating of 8.7 out of 10 from a total of 3005 ratings on Drugs.com. 84% of reviewers reported a positive effect, while 5% reported a negative effect. |
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| Drug Class | |||||||||||||||||
| Side Effects | |||||||||||||||||
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See also: Contrave side effects in more detail. |
See also: phentermine side effects in more detail. |
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| Generic Availability | |||||||||||||||||
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Lower cost generic |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Contrave prices |
View all phentermine prices |
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| Dosage Forms Available | |||||||||||||||||
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| Brand Names | |||||||||||||||||
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N/A |
Adipex-P, 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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21 hours |
20 hours |
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| CSA Schedule ** View glossary of terms | |||||||||||||||||
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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 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 733 drugs are known to interact with Contrave:
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A total of 194 drugs are known to interact with phentermine:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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September 10, 2014 |
August 14, 1973 |
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| WADA Class View World Anti-Doping Agency classifications. | |||||||||||||||||
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N/A |
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| More Information | |||||||||||||||||
| Patient resources | |||||||||||||||||
| Professional Resources | |||||||||||||||||
| 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.