Pill Identification by Imprints: WPI 3631 Home Pill Identification by Imprints: WPI 3631 1 result HYDROMORPHONE HCL ER 32 MG TAB Side 1: WPI 3631 Color: White Side 2: Shape: Round Other Popular Drug Imprint 2083 V LOVAZA E P 5271 93 M F6 L054 WPI 1.5 PD 222 44 69 M MT Lilly 3228 SLC 222 MSD 749 PEPCID WPI 845 CCC 500 RX 828 logo and TF M N3 U 169 P201 TYLENOL 4 CODEINE EM2 L195 G442 93 753 93-5 AR 374 TUSSIGON ALVA 99 L181 24 138 J66 54 650 SU PE APO ZIP E 82 CPC 1325