Pill with imprint B is Pink, Round and has been identified as Children's benadryl allergy fastmelt diphenhydramine citrate 19 mg. It is supplied by Pfizer U.S. Pharmaceuticals Group.

Diphenhydramine is used in the treatment of Allergic Reactions; Allergic Rhinitis; Insomnia; Cough; Cold Symptoms and belongs to the drug classes anticholinergic antiemetics, anticholinergic antiparkinson agents, antihistamines, miscellaneous anxiolytics, sedatives and hypnotics. There is no proven risk in humans during pregnancy. Diphenhydramine diphenhydramine citrate 19 mg is not a controlled substance under the Controlled Substances Act (CSA).