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 WELLBUTRIN XL 150 G 3720 I83 93 2264 N 50 POLY 212 Tiazac 360 ENA MP 578 E701 TAK ALG-12.5 TZD E 511 H3647 272 DISTA H69 G-DS-75 RI 5 E 117 LB2 01 G 240 logo and 1000-20 M53 132 b 98 ZESTRIL 30 V360 L13 0 8 58 82 E 101 115 M 58 FAM125 Fentanyl 100 mcg/hr M1000 TCL242 T 543 ZA48