Pill Identification by Imprints: 4221 Home Pill Identification by Imprints: 4221 1 result KOMBIGLYZE XR 5-500 MG TABLET Side 1: 5/500 Color: Light Brown Side 2: 4221 Shape: Oblong Other Popular Drug Imprint LOTENSIN HCT 57 71 BL 04 30 mg M 444 TL606 SEA RLE 10 21 C77 LIN 600 CM2 TMZ 16 logo and 574 APO 041 BCL 50 502 CL7 logo and 247 54 661 MYLAN 8008 PC16 N1 44 392 RD 72 PFIZER 396 1325 759 SANDOZ 625 C 269 Z16 N10 PAR 823 93 7373 A85 5553 GP logo and 5306 77 331 T53