Pill Identification by Imprints: U 137 Home Pill Identification by Imprints: U 137 2 results CLONIDINE HCL 0.3 MG TABLET Side 1: U 137 Color: White Side 2: Shape: Oval CLONIDINE HCL 0.3 MG TABLET Side 1: U 137 Color: White Side 2: Shape: Oval Other Popular Drug Imprint A332 HP 61 logo and 8 1181 GG 341 D 88 45 77 C182 SB 4140 Z 3927 CL8 294 ZF 15 LITHOBID 300 MP 542 MYLAN 531 BP 706 GS FH2 1077 PROCARDIA XL 90 Z 2089 Butrans 5mcg/hour 466 WAT SON 1044 FENTANYL 75mcg/h P 20 93 215 NL 572 ZC 08 45 K-TAB 446 OME 10 608 2.5/500 N T WATSON 416 44 348 WAR 7 1/2