Pill Identification by Imprints: M 1840 Home Pill Identification by Imprints: M 1840 1 result METHYLPHENIDATE ER 40 MG CAP Side 1: M 1840 Color: Yellow Side 2: 40 mg Shape: Oblong Other Popular Drug Imprint LCI SUSTIVA V-Z-F A401 PERCOCET 3RP PA 915 K12 G 036 5 14 V267 par 289 C27 IBU 400 5.7 L734 214 or 215 ENA HAW 100 PLIVA 334 83 029 OP 707 G 532 FS2 B056 L180 659 PRODRIN 603 54 515 ML 89 CH SZ 986 R0.50 Watson 371 8119 O23 CLA500 MP 37