Pill Identification by Imprints: N 40 Home Pill Identification by Imprints: N 40 3 results NADOLOL 40 MG TABLET Side 1: N 40 Color: Light Yellow Side 2: Shape: Round ROPINIROLE HCL 4 MG TABLET Side 1: M Color: Gray Side 2: N 40 Shape: Round ROPINIROLE HCL 4 MG TABLET Side 1: M Color: Gray Side 2: N 40 Shape: Round Other Popular Drug Imprint AX4 57 55 APO 1000 78 MAG 64 A-002 551 ZYVOX 600 mg C134 400 mg Lilly 3228 RX 829 SA 25 S4 LBH 15 mg logo and 2838 McNEIL logo and 3062 1010 Syntho n 358 WW65 logo and 38 1106 741 RX 537 P4 316 G&W logo and 509 MP 89 E 146 EP136 H 104 P 50 1181 US 14 B 1 L237 Erymax 250 mg