Pill with imprint L431 is Blue, Capsule-shape and has been identified as Diphenhydramine Hydrochloride 25 mg. It is supplied by Wal-Mart Stores Inc.

Diphenhydramine is used in the treatment of Allergic Reactions; Allergic Rhinitis; Cough; Insomnia; 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 25 mg is not a controlled substance under the Controlled Substances Act (CSA).