Generic Name: phentermine (FEN ter meen) Brand names: TERFAMEX. Phentermine: Clinical Pharmacology Phentermine a sympathomimetic amine with pharmacologic activity similar to the prototype drugs of this class used in obesity, the amphetamines.

When to Take Terfam

Your doctor will talk to you about specific dosing instructions to accommodate your individual schedule, but this medication is typically taken:

  • First thing in the morning (before breakfast), OR
  • 1-2 hours after breakfast

Terfam and Other Medications

Terfamex interacts with many medications and supplements, so you should always clear any change in your pill routine with a medical professional. Your prescribing doctor especially needs to know if you currently take, or in the last two weeks have taken, a(n):

  • Antidepressant medications, like monoamine oxidase inhibitors (MAOIs) or selective serotonin reuptake inhibitors (SSRIs)
  • Blood pressure medications, like guanadrel o guanethidine.