Adipex-P Side Effects
Generic name: phentermine
Medically reviewed by Drugs.com. Last updated on Nov 10, 2022.
Note: This document contains side effect information about phentermine. Some dosage forms listed on this page may not apply to the brand name Adipex-P.
Applies to phentermine: oral phentermine hydrochloride capsules and tablets, oral phentermine resin complex capsules.
Side effects include:
Palpitation, tachycardia, increased BP, overstimulation, restlessness, insomnia, tremor, dizziness, headache, euphoria, dysphoria, dryness of the mouth, unpleasant taste, diarrhea, constipation, vomiting, other GI disturbances, urticaria, impotence, changes in libido.
For Healthcare Professionals
Applies to phentermine: compounding powder, oral capsule, oral capsule extended release, oral tablet, oral tablet disintegrating.
General
The more commonly reported adverse reactions have included palpitations, restlessness, insomnia, and headache.
Cardiovascular
Frequency not reported: Regurgitant cardiac valvular disease, primary pulmonary hypertension, palpitations, tachycardia, elevated blood pressure, precordial pain, ischemic events, angina, myocardial infarction, cardiac failure, cardiac arrest[Ref]
Nervous system
Frequency not reported: Overstimulation, restlessness, nervousness, dizziness, euphoria, dysphoria, tremor, headache, fatigue, cerebrovascular events[Ref]
Psychiatric
Frequency not reported: Insomnia, psychosis, impotence, libido changes, depression, hallucinations[Ref]
Hypersensitivity
Frequency not reported: Urticaria[Ref]
Gastrointestinal
Frequency not reported: Dry mouth, unpleasant taste, diarrhea, constipation, other gastrointestinal disturbances, nausea, vomiting, abdominal cramps[Ref]
Dermatologic
Frequency not reported: Rash[Ref]
Genitourinary
Frequency not reported: Micturition disturbances[Ref]
Other
Frequency not reported: Facial edema[Ref]
Frequently asked questions
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References
1. Cerner Multum, Inc. Australian Product Information.
2. Product Information. Phentermine Hydrochloride (phentermine). Teva Pharmaceuticals USA. 2016.
3. Product Information. Adipex-P (phentermine). Teva Pharmaceuticals (formerly Gate Pharmaceuticals). 2016.
4. Product Information. Lomaira (phentermine). KVK-Tech Inc. 2016.
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Some side effects may not be reported. You may report them to the FDA.
