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 HP59 083 TL 218 barr 140 mg MUTUAL 105 MYLAN 6060 2531 logo and 4346 TMC125 GG 256 U46 A 49 CP 406 T31 HP 43 L126 L217 678 S 21 44 428 717 Ocuvel GG D8 54 552 GG 957 LCI 1383 MP 112 U 136 E6 523 30 mg LAMICTAL XR 200 logo and 40 102 802 E 42 A-002 54 346 logo 271 C