Pill Identification by Imprints: WPI 3739 Home Pill Identification by Imprints: WPI 3739 1 result HYDROMORPHONE HCL ER 12 MG TAB Side 1: WPI 3739 Color: Dark Yellow Side 2: Shape: Round Other Popular Drug Imprint 93 41 1253 MUTUAL 868 Z4 L432 AN 641 R6 DAN 5556 D12 XENICAL 120 CGPI S 180 SZ 986 H 104 A510 AZ 80 7663 U16 V 6 VIO9111 DROXIA 6336 93 7373 E 63 logo and 5029 DYRENIUM 50 mg V 399 400 mg 129 GG 772 R4 PD NPR EC 375 675 E41 KPI 284 W 782 CPC WW969 037