No official level: The FDA encourages no more than the recommended dosage of 37.5 mg. Phentermine has effects on the nervous system. High doses can cause mental distrubance, hypertension, and heart rhythm disturbance. There are also gi symptoms. Excessive doses are potentially fatal. Phentermine is contraindicated for patients with significant heart problems, glaucoma, and overactive thyroid.
Answered 5/4/2017
900 views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question