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 FP650 REL900 M164 AMBI 409 G 2001 n 575 AZ221 NP 13 54 463 MSD 117 CRESTOR 10 NC 667 RTG 50 GG 134 ZA 64 APO TI-4 M 547 cor 239 M 3 1078 T 2 1097 N 200 logo 1114 A675 319 BP 607 175 MYLAN 3025 S551 logo and 004 par 117 679 ST 300 AN 545 N S1 L147 Neurontin 300 mg ADG MYLAN DE 30