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 LUPIN LUPIN V251 A IH PB 93 833 44 69 PC18 HH210 R 127 N 947 LCI 1311 E 123 V265 96 MP 659 125 B 153 VIVUS T 194 CL 73 SI LC 450 BY1 V30 T/255 0 8 Neurontin 100 mg ex-lax GS FC2 MYLAN FE 134 SZ 395 M151 I 6 D 32 Lilly 3232 PH 043 2683 54 161 L476 M 37