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 502 E 134 E P A CH VM RX615 WW929 44-466 GG 108 ML 31 cardizem CD 360 mg M 138 E 10 EP 905 LCI G231 Mini E20 M MC2 HP 44 V500 M Z2 LAMICTAL ATN 50 Dia B FL N 305 367 CIT AN 643 BMS 200 mg E 211 MD I 2 LL 252 GG 772 M 445 332 MCR 109 V 200