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 44 403 248 952 PA09 IX524 AN 1 H 009 logo and 2907 FL 290 WW929 921 M E17 SHIRE 465 1/2 KLONOPIN WW 66 logo and 117 Integra-F 3670 54 883 PAR 868 200 or 400 T 47 SEA RLE 10 21 44 137 93 3125 DAN 5782 S 741 GPI W2 827 CP 100 cor 188 P121 P-D 007 LC 77 L181 T3 745 A21 G 2001 T1