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 AZ 217 973 98 AAA 1138 L131 AMT MACRODANTIN 50 mg P-113 GG N4 K10 M161 SV LH2 NC 667 U-S 40 1/4 A66 TE TE 16 7033 54 343 AN 545 ADALAT CC logo and Pamelor 50 mg AA 99 831 1 EC 497 GX EH3 TA4M HP 2 10 MIA 3431 44 226 RG 11 N010 TL388 GG 264 MYLAN DE 40 T 150