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 logo and H4 DSS L15 CL 76 FENTANYL 600 Sandoz 663 FL 145 RDY608 607 cor 130 128 logo and 65 PA09 WW 125 logo and 2416 ZC19 L236 N1 CPC 997 Lopid 740 N 11 TV 10 G&W 0555 O C370 G 70 logo and KT ANI 230 DIFLUCAN 200 T3 DAN 5782 L49 M D54 WC VISTA 115 TEVA 7589 logo and 2778 RX 504 MYNEPHRON