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 R575 BCL 50 FL 145 51 30 INDERAL LA 60 AW 0866 LASIX and logo 80 logo and 500 MP 116 R-264 G 2004 ED PSE 4212 E 136 CT 1 WW1 S 225 A 39 448 E226 logo and KA VP068 M A12 M C 63 I G 12.5/1000 M 943 556 KU 129 573 AP211 MACRODANTIN 100 mg HP 46 ZA-46 logo and EK 93 3167 CRESTOR CBP 400