Pill Identification by Imprints: M 1850 Home Pill Identification by Imprints: M 1850 1 result METHYLPHENIDATE ER 50 MG CAP Side 1: M 1850 Color: White Side 2: 50 mg Shape: Oblong Other Popular Drug Imprint M R7 n 574 U 135 B 576 MVC 75 660 GG 227 ZOVIRAX 806 T500 54 302 IP 146 PRECOSE 100 G264 M PD9 L368 logo and 342 A297 logo and 511 A 38 TEVA TEVA 93 41 NL 575 292 L441 271 558 R 10 logo and 0304 logo and 831 C152 93 5296 G72 AN 512 MG1 POT 40 R136 L189 logo and 660 MP 511