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 T582 G 171 HP 63 alza 18 WATSON 151 logo YH AN 641 A3 or F1 US 67 ITR CP 419 755/93 par 085 93 3165 10 00 MYLAN 6725 54 661 APO 500 E794 GILEAD 4331 Poly 216 WAR 5 AA 14 LAMICTAL XR 25 or 50 or 100 G 372 2 K12 XENICAL 120 RE 76 I6 E 16 1207 1344 PC20 GG C9 10 mg EL 15 M 522 logo and 076 RG78 W 787