Clemastine Dosage

Medically reviewed by Drugs.com. Last updated on Aug 3, 2023.

Usual Adult Dose for Allergic Rhinitis

Initial dose: 1.34 mg orally twice a day. Dosage may be increased as required, but not to exceed 2.68 mg orally 3 times a day.

Usual Adult Dose for Urticaria

Initial dose: 1.34 mg orally twice a day. Dosage may be increased as required, but not to exceed 2.68 mg orally 3 times a day.

Usual Adult Dose for Allergic Reaction

Initial dose: 1.34 mg orally twice a day. Dosage may be increased as required, but not to exceed 2.68 mg orally 3 times a day

Usual Pediatric Dose for Allergic Reaction

< 6 years:

0.335 to 0.67 mg/day orally divided into 2 or 3 doses. Maximum daily dose is 1.34 mg.

6 to 12 years:

0.67 to 1.34 mg orally twice a day. Maximum daily dose is 4.02 mg.

> 12 years:

Initial dose: 1.34 mg orally twice a day. Dosage may be increased as required, but not to exceed 2.68 mg orally 3 times a day.

Usual Pediatric Dose for Allergic Rhinitis

< 6 years:

0.335 to 0.67 mg/day orally divided into 2 or 3 doses. Maximum daily dose is 1.34 mg.

6 to 12 years:

0.67 to 1.34 mg orally twice a day. Maximum daily dose is 4.02 mg.

> 12 years:

Initial dose: 1.34 mg orally twice a day. Dosage may be increased as required, but not to exceed 2.68 mg orally 3 times a day.

Usual Pediatric Dose for Urticaria

< 6 years:

0.335 to 0.67 mg/day orally divided into 2 or 3 doses. Maximum daily dose is 1.34 mg.

6 to 12 years:

0.67 to 1.34 mg orally twice a day. Maximum daily dose is 4.02 mg.

> 12 years:

Initial dose: 1.34 mg orally twice a day. Dosage may be increased as required, but not to exceed 2.68 mg orally 3 times a day.

Dose Adjustments

Many patients respond favorably to a single dose (clemastine 2.68 mg) which may be repeated as required, but not to exceed 3 tablets a day.

Further information

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

Medical Disclaimer