Summary of drug information (MedlinePlusDrug) Medline Plus.gov: Difenidramina [em inglês] diphenhydramine diphenhydramine Medline Plus nlm.nih.gov diphenhydramine Diphenhydramine nlm.nih.gov diphenhydramine diphenhydramine diphenhydramine diphenhydramine according to the NIH diphenhydramine diphenhydramine diphenhydramine Benadryl (diphenhydramine) Benadryl (diphenhydramine) diphenhydramine diphenhydramine Learn more nlm.nih.gov