Adipex-P Dosage

Generic name: PHENTERMINE HYDROCHLORIDE 37.5mg
Dosage form: tablets, capsules
Drug classes: Anorexiants, CNS stimulants

Medically reviewed by Drugs.com. Last updated on Mar 28, 2024.

Exogenous Obesity

Dosage should be individualized to obtain an adequate response with the lowest effective dose.

The usual adult dose is one tablet (37.5 mg) daily as prescribed by the physician, administered before breakfast or 1 to 2 hours after breakfast. The dosage may be adjusted to the patient’s need. For some patients, half tablet (18.75 mg) daily may be adequate, while in some cases it may be desirable to give half tablets (18.75 mg) two times a day.

ADIPEX-P® is not recommended for use in pediatric patients less than or equal to 16 years of age.

Late evening medication should be avoided because of the possibility of resulting insomnia.

Dosage in Patients with Renal Impairment

The recommended maximum dosage of ADIPEX-P® is 15 mg daily for patients with severe renal impairment (eGFR 15 to 29 mL/min/1.73 m2). Avoid use of ADIPEX-P® in patients with eGFR less than 15 mL/min/1.73 m2 or end-stage renal disease requiring dialysis.