Phentermine Alternatives Compared
| Phentermine | Victoza | Adipex-P |
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| Phentermine | Victoza liraglutide | Adipex-P phentermine |
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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 |
Victoza lowers blood sugar levels by mimicking the effects of GLP-1, a naturally occurring hormone that stimulates insulin secretion and lowers glucagon secretion from the liver. It is given once... View more |
Prescribed for Weight Loss, Obesity. Adipex-P may also be used for purposes not listed in this medication guide. |
Choose a suggestion below |
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| More about Phentermine | More about Victoza (liraglutide) | More about Adipex-P (phentermine) | ||||||||||||||||||||||||
| Generic Status | ||||||||||||||||||||||||||
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No lower-cost generic available |
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| Availability | ||||||||||||||||||||||||||
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Prescription only |
Prescription only |
Prescription only |
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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 2918 ratings on Drugs.com. 84% of reviewers reported a positive effect, while 5% reported a negative effect. |
Victoza has an average rating of 7.7 out of 10 from a total of 705 ratings on Drugs.com. 71% of reviewers reported a positive effect, while 13% reported a negative effect. |
Adipex-P has an average rating of 8.9 out of 10 from a total of 598 ratings on Drugs.com. 86% of reviewers reported a positive effect, while 4% reported a negative effect. |
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| Drug Class | ||||||||||||||||||||||||||
| Side Effects | ||||||||||||||||||||||||||
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See the full phentermine side effects document. |
See the full Victoza side effects document. |
See the full Adipex-P side effects document. |
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| Pricing and Coupons * Prices are without insurance | ||||||||||||||||||||||||||
View all phentermine prices |
View all Victoza prices |
View all Adipex-P prices and generic prices |
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| Dosage Form(s) Available | ||||||||||||||||||||||||||
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| Brand Names | ||||||||||||||||||||||||||
| Adipex-P, Atti-Plex P, Lomaira | Other liraglutide brands include: Saxenda | 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 |
13 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 C
Risk cannot be ruled out
Victoza
Category X
Not for use in pregnancy
Saxenda 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 170 drugs are known to interact with phentermine:
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A total of 250 drugs are known to interact with Victoza:
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A total of 170 drugs are known to interact with Adipex-P:
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| First Approval Date | ||||||||||||||||||||||||||
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August 14, 1973 |
January 25, 2010 |
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.