Skip to main content

Phenylpropanolamine Dosage

Applies to the following strengths: 75 mg; 25 mg; 37.5 mg; 50 mg; 180 mg-75 mg

Usual Adult Dose for:

Usual Pediatric Dose for:

Additional dosage information:

Usual Adult Dose for Nasal Congestion

25 mg orally every 4 hours.

-or-

75 mg orally extended release every 12 hours.

Not to exceed 150 mg/day.

Usual Adult Dose for Weight Loss

25 mg orally 3 times a day, one-half hour before meals.

-or-

75 mg orally extended release once a day in the morning.

The use of phenylpropanolamine for weight loss should be limited to 12 weeks.

Usual Pediatric Dose for Nasal Congestion

2 to 6 years:

6.25 mg orally every 4 hours. Maximum daily dose is 37.5 mg.

6 to 12 years:

12.5 mg orally every 4 hours. Maximum daily dose is 75 mg.

> 12 years:

25 mg orally every 4 hours.

-or-

75 mg orally extended release every 12 hours.

Not to exceed 150 mg/day.

Renal Dose Adjustments

Because phenylpropanolamine is eliminated primarily by the kidneys, one-half of the normally recommended dosage should be given. Patients with renal dysfunction should be monitored for signs and symptoms of toxicity when using phenylpropanolamine.

Other Comments

In November 2000, the Food and Drug Administration (FDA), in response to reports of increased risk of hemorrhagic stroke, requested that all drug companies discontinue marketing products containing phenylpropanolamine.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Medical Disclaimer