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 EP 136 35 79 93 208 logo and 122 758 876 N 135 VP038 NL 571 NT 200 ZLP V 23 ALTACE 10 mg logo and 60 7188 975 54 549 45 78 RX 830 RI20 TUMS NP 1 P 054 58 75 FL 93 3160 B 153 ZA06 ZE 49 IP204 MX31 SL 125 UPSHER-SMITH 0225 C370 MYLAN 2100 0397 SU PE logo YC FOSTEUM PLUS TUSSIGON