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 P24HR HP 531 5 5 5 DIFLUCAN 150 25mg OR FOR SLEEP M P297 32 LAN 1109 BTG BMS IP 253 3 5 GAL 24 Advil 498 ZOMIG 5 .7 54 737 PLIVA 468 L012 4165 logo and 150 HP 228 V 1 VP 045 M Z2 BM 105 EK 10 B 311 MEPHYTON 192 MYLAN 1001 671 54 242 E9 L181 457 Black B 749 A10 US 67