Alpharma USPD/Xactdose, Inc. BrandsUpdated: November 8, 2013 Alpharma USPD/Xactdose, Inc. manufacturers the following brands:Carafate Dilantin Retrovir Sulfatrim Zantac GenericsBack to TopAlpharma USPD/Xactdose, Inc. manufacturers the following generics:Phenytoin Ranitidine Sucralfate Sulfamethoxazole Trimethoprim Zidovudine