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 G 254 WPI 3508 SZ 657 E 140 D 25 G4 TARO CZ ER 300 54 273 MP 513 5 XL M 414 G 0029 C 25 TL 115 2 0 9 0 L 299 OCUVITE PROVERA 10 A 48 ACIPHEX 20 6 93 3171 MYNEPHRON SJ 646 37 97 0382 20 mg 020 b 775 MYLAN 2302 NC 300 M 722 logo and 2891 M U13 Andrx 697 L 128 783 44-466 010 logo 752 OME 10