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Comparing Phentermine

Phentermine

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... more

Prescription only

Ratings & Reviews

Recent helpful reviews
8.7
2554 Reviews

For Weight Loss I have been taking this medication for many years. The key is that it has to be paced. If you take it too frequently, it becomes worthless because you build up a tolerance for it. You can become moody and agitated. Finding a lifestyle change and not relying on a drug to stay thin. I take it very intermittently, by that I mean every 3 weeks to every month and a half as needed. I save it for my temptation days when I'm gonna need it the most. My weight has not changed from the 75 lbs. I originally lost 10 years ago.

9
Kariprohaska

For Weight Loss I've been taking phentermine for 2 months and I have lost 22 pounds. I haven't exercised just my normal active life as a mother and student. The only side effect I've had is severely dry mouth and no appetite. I literally force myself to eat something

9
Katrina84

View all 2554 reviews

Drug Class

Side Effects

See the full phentermine side effects document.

Pricing and Coupons

* Prices are without insurance
Quantity 7 tablet
Dosage 37.5 mg
Per Unit* $1.58
Cost* $11.07
View all phentermine prices

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Generic Availability

Yes (this medicine)

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

Brand Names
Adipex-P, Atti-Plex P, Lomaira, Pro-Fast HS, Pro-Fast SA, and Pro-Fast SR

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

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.

Pregnancy Category
X
Category X Not for use in pregnancy

See the full Pregnancy Warnings document.

FDA Alerts

N/A

Drug Interactions

A total of 516 drugs are known to interact with phentermine:

  • 90 major drug interactions (477 brand and generic names)
  • 424 moderate drug interactions (3442 brand and generic names)
  • 2 minor drug interactions (6 brand and generic names)

Alcohol/Food/Lifestyle Interactions
  • Using phentermine with alcohol can increase the risk of cardiovascular side effects such as... more

Disease Interactions

First Approval Date

August 14, 1973

WADA Class

View World Anti-Doping Agency classifications.

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

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