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 M 75 WELLBUTRIN 100 SZ 467 C 283 XANAX 0.5 S Z FOLET RH38 M D27 D 95 VIO9111 TL 171 O HP 149 I 35 logo 1114 ibr 70 mg 93 3147 P 240 TL049 346 Lilly 3227 logo and HC 1052 PLIVA 483 CEP GG 44 MYLAN 5428 PERCOGESIC Watson 526 286 AN 511 ALKA SELTZER and logo 721 1 D2/500 1206 cpc43 GS JT EV0070 T011