Prescription onlyLower-cost generic availableClass: Gastrointestinal



Prescription onlyLower-cost generic availableClass: Gastrointestinal
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Makes you less hungry.

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Our bottom line

Adipex-P (Phentermine) can help you lose weight, but most insurance companies don't cover it, and you shouldn't use it long-term.


  • Lowers appetite.
  • Can increase your ability to exercise and how long you're able to exercise.
  • Available as a combo with topiramate as Qsymia, which is recommended more highly, but it's still not that effective.
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  • Even though Adipex-P (Phentermine) is available as a generic, most insurance companies don't cover it, so you may have to pay for it out of pocket.
  • Can lower your sex drive.
  • Can only be used for 12 weeks since you can develop tolerance.
  • Not a first-line treatment for losing weight.
  • Can be habit-forming.
How it works

Adipex-P (Phentermine) is an appetite suppressant. It lowers your appetite and has a stimulating effect, which can make you want to exercise more and help you lose weight.

What to expect when you take Adipex-P (phentermine) for Appetite suppressant

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Side effect rates for Adipex-P (phentermine)

Risks and Warnings for Adipex-P (phentermine)

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  • People on Adipex-P (Phentermine) have reported high blood pressure in the lungs. This has been very rare. Symptoms include trouble breathing, chest pain, swelling in your legs, and fainting spells. If you notice a sudden decrease in how much you can exercise, talk to your doctor immediately.

Common concerns from people taking Adipex-P (phentermine)

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  • Take this before or 1 to 2 hours after your breakfast.
  • Taking Adipex-P (Phentermine) for weight loss is only meant for a few weeks at the most, since your body can become used to the medication, and then it stops working. Taking more than what your doctor tells you to take will not help. Talk to your doctor about how to use this to help you lose weight along with diet and exercise.
  • Not a first-line treatment for losing weight.