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 M 411 APO 850 PLIVA 471 TL 113 LITHOBID 300 011 90 TARO CZ ER 100 WAT SON E 205 OR 606 C533 DAN 5561 B106 par 028 860 FLI 21 mg M522 HP 512 M75 logo and 524 54 702 E 128 logo and p 3609 V241 LEMMON G23 L 4 GG 532 GG 334 4187 FV M 615 N 943 120 mg J63 MP 277 MYLAN 232 UCB 583