Comparing Qsymia vs Xenical
| Qsymia (phentermine / topiramate) | Xenical (orlistat) |
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| Qsymia (phentermine / topiramate) | Xenical (orlistat) |
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Prescription only
Prescribed for Weight Loss (Obesity/Overweight). Qsymia may also be used for purposes not listed in this medication guide. |
Prescription only
Prescribed for Weight Loss (Obesity/Overweight). Xenical 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 Qsymia (phentermine / topiramate) | More about Xenical (orlistat) | ||||||||||||||||
| Ratings & Reviews | |||||||||||||||||
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Qsymia has an average rating of 7.6 out of 10 from a total of 567 ratings on Drugs.com. 70% of reviewers reported a positive effect, while 15% reported a negative effect. |
Xenical has an average rating of 8.2 out of 10 from a total of 123 ratings on Drugs.com. 73% of reviewers reported a positive effect, while 7% 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 Qsymia side effects |
View all Xenical side effects |
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| Drug Class | |||||||||||||||||
| Generic Availability | |||||||||||||||||
| Pricing and Coupons * Prices are without insurance | |||||||||||||||||
View all Qsymia prices |
View all Xenical prices |
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| Dosage Forms | |||||||||||||||||
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| Brand Names | |||||||||||||||||
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N/A |
Other orlistat brands include: Alli | ||||||||||||||||
| Half Life Drug half-life is the time required for plasma concentration to reduce to half its original value. | |||||||||||||||||
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65 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 417 drugs are known to interact with Qsymia:
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A total of 145 drugs are known to interact with Xenical:
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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 | |||||||||||||||||
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| First Approval Date | |||||||||||||||||
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July 17, 2012 |
April 23, 1999 |
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| WADA Class View classifications | |||||||||||||||||
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N/A |
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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.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.