DIPHENHYDRAMINE HCL TABLET [RUGBY LABORATORIES INC.] Home DIPHENHYDRAMINE HCL TABLET [RUGBY LABORATORIES INC.] DIPHENHYDRAMINE HCL TABLET [RUGBY LABORATORIES INC.] PDF | XML NDC 0536-3772-06 Set ID 66d3cb86-df2c-443f-9bdd-79995b55d0a4 Generic Name Product Class Product Number Application Number PART341 Related Drugs Search DailyMed Drugs