Pill Identification by Imprints: M 50 Home Pill Identification by Imprints: M 50 2 results CHLOROTHIAZIDE 250 MG TABLET Side 1: M 50 Color: White Side 2: Shape: Round METOPROLOL SUCC ER 50 MG TAB Side 1: m 50 Color: White Side 2: Shape: Round Other Popular Drug Imprint ACTIQ CR 750 PBT 5.0 54 122 B854 B 526 logo and 81 M 40 0.5 mg GIL 0.5 Z 4235 WATSON 345 logo and 88 M159 LEVOXYL ZE66 ZA-44 M 0 5 T31 CL 78 460 ZF 26 M 573 1139 ML 43 HYD 30 OS 304 H569 ED 200 ETO 200 MG E502 F L SZ 439 CLR 50 ZE 50 logo and 199 C272 V 150 721 1 logo and 3059