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 RTG-400 M164 WPI 3635 ZGNX 15 mg EV0070 VIO9111 L368 G220 G1 54 299 HYZAAR 459 9Q3 PD 237 W 93 4069 N 11 S 90 3 437 0524 0405 CLEOCIN 75 mg W 781 C4 MLX 123 AN248 cor 133 ZF 15 973 269/60 ZD 20 HP 229 BN4 GM 1 54 127 A3 or F1 477 E700 G 322 PROCARDIA XL 90 C F