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 FELDENE 44-292 H144 ZC 03 I 52 IP 179 L131 41 Z8 L3T3 NPR LE 250 P40 logo and 832 2101 TUSSIGON Lopid RDY 344 48 11 ED PSE 4212 V344 GS FFS 75 GP 151 533 T546 H 146 EM3 500 500 G453 VRX 0901 T 543 SR 375 IP 212 316 cor 131 402 BP 814 M C52 ZA22 C370