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 4009 G221 370 TL 177 CL 20 logo and 750 CP109 MYLAN 4250 KC 8 NORPRAMIN 100 CL 022 1272 M111 S193 D3 or P AA 16 WW 948 DG1 GILEAD M 93 A 153 SZ 788 C 14 S552 M B9 N 343 Zzz PLIVA 648 T D logo and 119 5513 LL 254 MP 277 G 152 1441 W 782 M 1743 44- 107 E700 353