Comparing Phentermine / Topiramate vs Vyvanse
| Phentermine / topiramate | Vyvanse (lisdexamfetamine) |
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| Phentermine / topiramate | Vyvanse (lisdexamfetamine) |
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Prescription only
Prescribed for Weight Loss (Obesity/Overweight). Phentermine / topiramate may also be used for purposes not listed in this medication guide. |
Prescription only
Vyvanse is a stimulant used for the treatment of ADHD to reduce symptoms such as impulsiveness and hyperactivity and to increase attention. It can also help increase the number of binge-free days per... View more |
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| More about Phentermine / topiramate | More about Vyvanse (lisdexamfetamine) | ||||||||
| Ratings & Reviews | |||||||||
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Phentermine / topiramate has an average rating of 7.7 out of 10 from a total of 692 ratings on Drugs.com. 71% of reviewers reported a positive effect, while 13% reported a negative effect. |
Vyvanse has an average rating of 7.4 out of 10 from a total of 973 ratings on Drugs.com. 65% of reviewers reported a positive effect, while 15% 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 Vyvanse side effects |
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| Drug Class | |||||||||
| Generic Availability | |||||||||
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N/A |
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| Pricing and Coupons * Prices are without insurance | |||||||||
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We could not find an exact match for this medicine. Try searching the Price Guide directly. |
View all Vyvanse prices |
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| Dosage Forms | |||||||||
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N/A |
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| Brand Names | |||||||||
| Qsymia |
N/A |
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| 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 |
1 hour |
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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. |
High potential for abuse
Has a high potential for abuse. Has a currently accepted medical use in treatment in the United States or a currently accepted medical use with severe restrictions. Abuse may lead to severe psychological or physical dependence. |
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| Pregnancy Category | |||||||||
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Category X
Not for use in pregnancy
See the full pregnancy warnings document. |
Category C
Risk cannot be ruled out
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 Phentermine / topiramate:
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A total of 393 drugs are known to interact with Vyvanse:
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| Alcohol/Food/Lifestyle Interactions | |||||||||
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| Disease Interactions | |||||||||
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| First Approval Date | |||||||||
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July 17, 2012 |
February 23, 2007 |
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| WADA Class View classifications | |||||||||
| More Information | |||||||||
| Patient Resources | |||||||||
| Professional Resources | |||||||||
| 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.