Pill Identification by Imprints: N 23 Home Pill Identification by Imprints: N 23 1 result NISOLDIPINE ER 30 MG TABLET Side 1: M Color: Orange Side 2: N 23 Shape: Round Other Popular Drug Imprint GM 1 44 428 ML 53 NPS 550 MP 201 or MP 802 L922 E 615 E72 M S23 AP4 L 348 ADIPEX-P 37.5 3205 R 158 or 54 312 or WC 731 MYLAN TE 2 H 94 EP136 E 56 TOZAL E 103 ROBAXIN 500 D I I cor 134 CL 39 300 HLP 40 KC 8 N 943 IL 3583 837 B 303 1345 54 111 E 55 A my MEDROL 32 RX126 ML 62 Organon M123 ORTHO 0.35