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 93 1060 logo and 346 RDY 664 HYD 60 5 mg 5mg C27 2232 APO 1000 3QD 94 AMBI 409 AP logo and 807 HH210 8.6 M 55 2130 MP 160 590 NL AA 15 C170 025 CL 31 128 WPI 100 CLA250 DS or DP 466 LMT or LAMICTAL LBH 20 mg PAD 0180 M 59 MYLAN TM 20 265 GG 517 K 8 3431 logo and 1112 PH 043