Comparing Adipex-P vs Alli
| Adipex-P (phentermine) | Alli (orlistat) |
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| Adipex-P (phentermine) | Alli (orlistat) |
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Prescription only
Prescribed for Weight Loss (Obesity/Overweight). Adipex-P may also be used for purposes not listed in this medication guide. |
Over-the-counter
Prescribed for Weight Loss (Obesity/Overweight). Alli may also be used for purposes not listed in this medication guide. |
Related suggestions Weight Loss (Obesity/Overweight)
Popular comparisons
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| More about Adipex-P (phentermine) | More about Alli (orlistat) | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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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 3% reported a negative effect. |
Alli has an average rating of 6.3 out of 10 from a total of 122 ratings on Drugs.com. 51% of reviewers reported a positive effect, while 30% reported a negative effect. |
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| Side Effects Experienced by Users Side effects are reported in Drugs.com user reviews and not clinically verified. | |||||||||||||||||
View all Adipex-P side effects |
View all Alli side effects |
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| Drug Class | |||||||||||||||||
| Generic Availability | |||||||||||||||||
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N/A |
N/A |
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| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Adipex-P prices |
View all Alli prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
| Other phentermine brands include: Atti-Plex P, Lomaira | Other orlistat brands include: Xenical | ||||||||||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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20 hours |
13.5 hours |
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| CSA Schedule 1 View glossary of CSA 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. |
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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 196 drugs are known to interact with Adipex-P:
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A total of 145 drugs are known to interact with Alli:
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| Alcohol/Food/Lifestyle Interactions | |||||||||||||||||
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No known alcohol/food interactions. This does not necessarily mean no interactions exist. Always consult your healthcare provider. |
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| Disease Interactions | |||||||||||||||||
| First Approval Date | |||||||||||||||||
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October 22, 1980 |
February 07, 2007 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
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| More Information | |||||||||||||||||
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| Related Treatment Guide | |||||||||||||||||
1 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.
See also:
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.