The answer to this question depends a lot on the medication you want to combine with phentermine. Some over-the-counter (OTC) and prescription medications are safe to take alongside phentermine, while others should be avoided since they produce dangerous interactions.
Medications that should NOT be taken while taking phentermine include:
for asthma/breathing problems
for cold, sinus problems or allergies
(unless explicitly instructed to do
so by the doctor that prescribed phentermine)
other diet pills
You should always ask your doctor or pharmacist before combining phentermine with any medication or supplement, whether it is prescription or OTC.
To read more about combining phentermine with other medications, please click here.
To read more about phentermine contraindications, please click here.