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 A X 8 313 Z320 20 mg M GP2 T200 RIDAURA I 15 IDT M15 cor 135 E71 C81 P201 AN 572 4890 West-ward 450 ML 33 UCB 581 logo and 0.5 CP 403 54 553 A 42 SLC 221 P-113 FL 21/10 C7 A 51 logo AB AUGMENTIN XR 3S0 0475 H 105 L2 or F M L20 LDK 150MG LU LU G 10 E1 or E2 SZ 390 N 739 3126