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Phentermine Alternatives Compared

View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Phentermine Remove Phentermine from your drug comparison Adipex-P Remove Adipex-P from your drug comparison Victoza Remove Victoza from your drug comparison
View side-by-side comparisons of medication uses, ratings, cost, side effects and interactions.
Phentermine Remove Phentermine from your drug comparison Adipex-P phentermine Remove Adipex-P from your drug comparison Victoza liraglutide Remove Victoza from your drug comparison

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

Prescribed for Weight Loss, Obesity. Adipex-P may also be used for purposes not listed in this medication guide.

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

Prescription only

Prescription only

Prescription only

Ratings & Reviews

View all 2871 reviews

View all 589 reviews

View all 680 reviews

Drug Class

Side Effects

See the full phentermine side effects document.

See the full Adipex-P side effects document.

See the full Victoza side effects document.

Pricing and Coupons

* Prices are without insurance
Quantity 7 tablet
Dosage 37.5 mg
Per Unit* $1.82 - $1.87
Cost* $12.73 - $13.07

View all phentermine prices

Quantity 30 tablet
Dosage 37.5 mg
Per Unit* $0.78 - $2.16
Cost* $23.35 - $64.68

View all Adipex-P prices and generic prices

Quantity 6 mL
Dosage 18 mg/3 mL
Per Unit* $119.47
Cost* $716.81

View all Victoza prices

Get free Discount Card

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Get free Discount Card

Generic Availability

Yes (this medicine)

Yes

No

Dosage Form(s) Available
  • Oral capsule
  • Oral tablet
  • Oral capsule
  • Oral tablet
  • Subcutaneous solution

Brand Names
Adipex-P, Atti-Plex P, Lomaira Other phentermine brands include: Atti-Plex P, Lomaira Other liraglutide brands include: Saxenda

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.

20 hours

20 hours

13 hours

CSA Schedule**

View glossary of terms.
4
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.
4
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.
N
Not a controlled drug

Is not subject to the Controlled Substances Act.

Pregnancy Category
X
Category X Not for use in pregnancy

See the full Pregnancy Warnings document.
X
Category X Not for use in pregnancy

See the full Pregnancy Warnings document.
C
Category C Risk cannot be ruled out

Victoza

X
Category X Not for use in pregnancy

Saxenda

See the full Pregnancy Warnings document.

FDA Alerts

N/A

N/A

FDA Alerts (2)

Drug Interactions

A total of 169 drugs are known to interact with phentermine:

  • 42 major drug interactions (182 brand and generic names)
  • 126 moderate drug interactions (569 brand and generic names)
  • 1 minor drug interactions (3 brand and generic names)

A total of 169 drugs are known to interact with Adipex-P:

  • 42 major drug interactions (182 brand and generic names)
  • 126 moderate drug interactions (569 brand and generic names)
  • 1 minor drug interactions (3 brand and generic names)

A total of 245 drugs are known to interact with Victoza:

  • 2 major drug interactions (5 brand and generic names)
  • 217 moderate drug interactions (1109 brand and generic names)
  • 26 minor drug interactions (594 brand and generic names)

Alcohol/Food/Lifestyle Interactions
  • Using phentermine with alcohol can increase the risk of cardiovascular side effects such as... View more
  • Using phentermine with alcohol can increase the risk of cardiovascular side effects such as... View more
  • Liraglutide may affect the absorption of other medications that you take by mouth. In some cases,... View more
  • Talk to your doctor before using alcohol together with liraglutide. Alcohol may affect blood... View more

Disease Interactions

First Approval Date

August 14, 1973

October 22, 1980

January 25, 2010

WADA Class

View World Anti-Doping Agency classifications.

N/A

More Information

Consumer 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.

Medical Disclaimer