Phentermine is a medication often prescribed as a short-term weight-loss aid. It comes in various forms and strengths, including:
- Phentermine 15 mg capsules
- Phentermine 30 mg capsules (blue color), equivalent to Fastin®
- Phentermine 30 mg capsules (yellow color), not equivalent to Fastin
- Phentermine 37.5 mg capsules
- Phentermine 37.5 mg tablets.
The usual recommended dose of
phentermine tablets is 18.75 mg (half a tablet) or 37.5 mg (one tablet) once daily in the morning. If necessary, your healthcare provider may recommend taking half a tablet twice a day to control your appetite, although this increases the risk of
insomnia. For the capsule form of this medication, the recommended dose is phentermine 37.5 mg capsules, 30 mg capsules, or 15 mg capsules once daily in the morning.
Your healthcare provider will recommend an appropriate amount for your situation based on the particular product you are taking, how you respond to phentermine, and whether you develop any bothersome side effects.
(Click Phentermine Dosage to find out what other factors your healthcare provider may consider when determining an appropriate dosage for your situation, potential dangers associated with long-term use of phentermine, and important tips and precautions.)
