DIPHENHIST (DIPHENHYDRAMINE HCL) TABLET [RUGBY LABORATORIES INC.] Home DIPHENHIST (DIPHENHYDRAMINE HCL) TABLET [RUGBY LABORATORIES INC.] DIPHENHIST (DIPHENHYDRAMINE HCL) TABLET [RUGBY LABORATORIES INC.] PDF | XML NDC 0536-3597-01 Set ID 9ca7184d-720e-4363-b5b7-34ffd61d4c6a Generic Name Product Class Product Number Application Number PART341 Related Drugs Search DailyMed Drugs