Pill Identification by Imprints: S551 Home Pill Identification by Imprints: S551 2 results OLMESARTAN-HYDROCHLOROTHIAZIDE 20-12.5 MG TAB Side 1: S551 Color: Pink Side 2: Shape: Round OLMESARTAN-HYDROCHLOROTHIAZIDE 20-12.5 MG TAB Side 1: S551 Color: Pink Side 2: Shape: Round Other Popular Drug Imprint 4941 93 41 A1 or A2 1253 M 59 G 423 R150 E701 A4 logo and 4404 A33 logo and 174 200 mg LAN 1109 F 24 MSD 106 E 4354 H145 ZYLOPRIM 300 5/120 54 H 3 OP100 GG 2 4 9 MOT COZAAR logo and D2 1000M Z16 93-5 4214 ZC57 1137 L 230 93 734 8 06 113 K 70 3431 8 05 E 50