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 P212 P 984 VH4 WATSON 463 786 26 EP 320 1311 RD27 190 1032 L424 UCB 579 257 246 or 303 logo and 28 Erymax 250 mg 2 or 4 SLOW- MAG V223 MYLAN 7155 PE820 2172 TEVA 7589 FENTANYL 400 HP 362 MARION 872 ALTO 93 7334 SEA RLE 10 21 ACCOLATE 10 J2 200 or 400 617 C148 RI1 GG 336 MYLAN 7170 1049