Pill Identification by Imprints: M 1820 Home Pill Identification by Imprints: M 1820 1 result METHYLPHENIDATE ER 20 MG CAP Side 1: M 1820 Color: Medium Blue Side 2: 20 mg Shape: Oblong Other Popular Drug Imprint M 59 874 4 46 GG 461 60 99 G 2001 R25 logo and 3062 L922 M 15 PLIVA 433 10 or 20 or 40 2773 MP 83 HP 18 93 900 EP 136 MIA 106 SPN GG 331 GG N7 MP 577 G 13 PH 034 F23 TCL242 HAW 100 M PD1 RG EL 15 WATSON 790 219 COUMADIN 5 SG 331 381 MYLAN MT 7 Endo 602 CCC 250 M U13 Poly 216