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 EXH 16 AN058 Advil C&S T 277 AA250 D1 or P LOR 10 NEXIUM 20mg M161 AN 543 logo and 5034 #L 001 V 3 logo and 2907 WW 268 54 771 FLUOXETINE 10 mg FENTANYL 1600 US 20 GS NX3 GS C 17 K6 3972 GG 738 T53 I63 APO ZIP GG 506 I82 W28 REGLAN ESL600 TL051 2 RP K 6 G 13 A my FLUMADINE 100 Advil A&CR