Get detailed information on Diphenhydramine ... PO- Adult- The recommended dose is 25 mg to 50 mg (1 to 2 capsules). Child- The recommended dose is 12.5 mg to 25 mg (1 capsule).
The patient reported no known drug allergies ... He was treated with diphenhydramine hydrochloride 25 mg i.v. and famotidine 20 mg i.v. Edema of the lip decreased, and he was discharged ...