Pill Identification by Imprints: AN 321 Home Pill Identification by Imprints: AN 321 4 results NIACIN ER 500 MG TABLET Side 1: AN 321 Color: Orange Side 2: Shape: Round NIACIN ER 500 MG TABLET Side 1: AN 321 Color: Orange Side 2: Shape: Round NIACIN ER 500 MG TABLET Side 1: AN 321 Color: Orange Side 2: Shape: Round NIACIN ER 500 MG TABLET Side 1: AN 321 Color: Orange Side 2: Shape: Round Other Popular Drug Imprint logo and 49 LES200 HP 2 MYLAN CF 45 G&W 0555 93 782 93 321 P297 32 logo and TJ 54 857 628 CM P3 M Z1 ZC 65 C1 or C2 or C3 4 9 9 5 93 3147 P-O logo 9 C 94 660 7 99 WAR 2 1/2 ella M 724 L546 ZF 15 GS UFU 50 WELLBUTRIN XL 150 GG 737 L428 P30 Z 4235 44 449 1 3 MP 14 L200 627