Who It Is For

The National Institutes of Health (NIH) states that phentermine hydrochloride is only appropriate for very overweight individuals who also have a condition, such as diabetes, high blood pressure or high cholesterol, that could lead to serious medical problems.

Use

Phentermine hydrochloride is intended only for short-term use, a few weeks at most, because it stops being effective.

Who Shouldn't Use It

According to the NIH, people with the following conditions should not use phentermine hydrochloride: advanced arteriosclerosis, cardiovascular disease, moderate to severe hypertension, overactive thyroid, known hypersensitivity to sympathomimetic amines, glaucoma and a history of drug abuse. Also, people who are agitated or who have used monoamine oxidase inhibitors in the past 14 days should not use phentermine hydrochloride.

Side Effects

Possible side effects of phentermine hydrochloride include primary pulmonary hypertension, heart palpitations, tachycardia, elevated blood pressure, gastrointestinal problems, impotence and nervous system effects such as restlessness, dizziness, insomnia, tremor and headaches.

Cautions

Phentermine hydrochloride is related to amphetamines and has the potential for being abused.

Source:

Daily Med: Adipex-P (Phentermine Hydrochloride)

Drugs.com: Phentermine Hydrochloride