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 RDY608 N 225 GS NX3 TRICARE DHA 401 logo and 345 Z 3927 5411 1000 MG 8 08 MYLAN 5427 NP 5 MSD 726 905 L 51 R 128 L190 AS 400 FELBATOL 400 WATSON 383 or WATSON PFIZER 396 RSV 5 G 70 PD 158 4839 V 44 438 ETO 200 MG OMJ 100 L 11 M RN2 LANNETT 129 83 1078 P10 E 16 752 54 583 GPI W2 T1 150 93 4068