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 U31 COUMADIN 3 A 171 MUTUAL 902 OS 211 UCB 583 A-295 K5 L255 E 128 93 833 CLARITIN D par 211 A175 737 logo and 524 6 mg SG 319 par 219 RDY 664 GGN2 721 H144 GS TEW 50 mg logo 133 743 PreQue E 70 HBP FLU logo and 497 M 83 A IL GG 108 AA 13 336 ML 042 2 9 ZD 20 171 KU 107