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 I G 674 RP 701 CP115 200 44 326 m 155 022 LANNETT 013 MYLAN 3000 L130 EP136 REL900 RDY609 A536 WATSON 404 par 218 142 I33 315 6 036 4186 logo and 2578 A733 ZOMIG 2.5 M2A3 57344 200 mg TZ 7 TENCON MYLAN 5420 AT 262 GG 109 707 44375 GG 957 RAPAMUNE 0.5 mg GGD7 853 10 mg US 15