Pill Identification by Imprints: C 91 Home Pill Identification by Imprints: C 91 2 results RIVASTIGMINE 1.5 MG CAPSULE Side 1: C 91 Color: Yellow Side 2: Shape: Oblong RIVASTIGMINE 1.5 MG CAPSULE Side 1: C 91 Color: Yellow Side 2: Shape: Oblong Other Popular Drug Imprint MYLAN 6201 708 E99 AMA RYL 798 13 30 MYLAN 5340 LCI E 511 C W121 A272 GILEAD MP 573 WC 730 LL713 K105 44-491 or 44-466 MYLAN TM 20 CM BCI 1345 BY4 H10/325 44 679 RU40 U S FOR SLEEP M R AA 76 S251 V04 0.45/20 GX EX1 89 TV U7 G52 ALG 264 2063 V L U CYP 196