Pill Identification by Imprints: GP 151 Home Pill Identification by Imprints: GP 151 1 result DOXAZOSIN MESYLATE 1 MG TAB Side 1: GP 151 Color: White Side 2: Shape: Round Other Popular Drug Imprint MYLAN 5300 L212 BI 6 321 TZ 4 LC 77 RI19 C 283 S252 106 MYLAN 3422 AN 553 5 6 PD 270 Y Y MRK EFF 5225 B 01 CL 1 #L 001 ACTIQ cor 212 D 27 ZF 24 IP 271 COB C324 500 04 BL 04 PAR 867 MX43 ZE 71 ex-lax WATSON 416 S407 logo and 530 G 3511 L416 CALAN 120