Skip to Content

What is the normal dosage for diphenhydramine capsules?

Responses (1)

Marvell 19 Oct 2009

Diphenhydramine Dosing Information - I've given the full dosing schedule (not just oral/capsules).

Usual Adult Dose for Extrapyramidal Reaction:

Parenteral: 10 to 50 mg IV or IM as needed. May increase dose to 100 mg if required. Maximum daily dose 400 mg.
Oral: 25 to 50 mg orally every 6 to 8 hours.

Usual Adult Dose for Insomnia:
25 to 50 mg orally at bedtime.

Usual Adult Dose for Motion Sickness:

Parenteral: 10 to 50 mg IV or IM as needed. May increase dose to 100 mg if required. Maximum daily dose 400 mg.

Oral: 25 to 50 mg orally every 6 to 8 hours. Administer first dose 30 minutes before exposure to motion and repeat before meals and upon retiring for the duration of the journey.

Usual Adult Dose for Cough:
25 mg orally every 4 hours as needed, not to exceed 150 mg per day.

Usual Adult Dose for Cold Symptoms:
25 to 50 mg orally every 4 to 6 hours as needed, not to exceed 300 mg/24 hours.

Usual Adult Dose for Pruritus:
25 to 50 mg orally every 4 to 6 hours as needed, not to exceed 300 mg/24 hours.

Usual Adult Dose for Urticaria:
25 to 50 mg orally every 4 to 6 hours as needed, not to exceed 300 mg/24 hours.

https://www.drugs.com/mtm/diphenhydramine.html

Drugs.com free discount card

Further Information

Search for questions

Still looking for answers? Try searching for what you seek or ask your own question.

Similar Questions