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 ADVIL PM MP 446 PY 1 K 8 logo and S5 MYLAN 6900 LILLY 4115 N A I7 NL 770 CP 404 93 311 NP 20 PRECOSE 50 SCI 500 CP109 RAPAMUNE 1 mg 325/40 M N4 TCL STARLIX fentanyl 800 mcg 2087 V MP 112 GG 706 921 667 MYLAN 2002 RX121 N 82 AZ 267 logo and 12 PT G 020 F 1 54 694 637 P 80 logo and 59 G 421