Pill Identification by Imprints: RI91 Home Pill Identification by Imprints: RI91 2 results MINOCYCLINE HCL 100 MG TABLET Side 1: RI91 Color: Yellow Side 2: Shape: Oval MINOCYCLINE HCL 100 MG TABLET Side 1: RI91 Color: Yellow Side 2: Shape: Oval Other Popular Drug Imprint R 127 PEPCID XANAX 0.5 P 240 54 591 Lilly 3229 MP 511 673 G442 SZ 395 N 40 755/93 CMC 176 PE820 F 76 ZD 14 DAN 50 AX7 NL 950 T591 TOPAMAX LCI 1332 S252 Rifampin 150 WW 927 M 14 SZ 136 5685 HP 1 CLA250 DDS 080 93 782 TN 1 E550 M P8 1.4 logo and 2781 521 306 604