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 RX694 M F5 7.5 M 36 473 54 710 J 245 FENTANYL 400 A30 West-ward 450 CYP 193 WPI 1119 NEORAL 25mg F 71 A333 par 022 SZ442 MAXIPHEN 833 5 KPI L282 SCI 500 PH 020 cor 133 Fentanyl 12 mcg/hr 2175 logo and 1002 B 311 K 46 L 217 VANCO B4 C ATABEX MP 201 GG 575 B 4 Mucinex 35 78 FAM500 logo and 9