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 S 20 IP 174 540 CT G 172 TV U4 54 650 54 857 LCI 1445 54 987 L160 RF 28 93 319 AN 361 1G TARO CZ ER 100 B 586 or B 587 Advil A&CR MMD EP 137 MYLAN FE 134 SFE BL 60 44 MF 1 KLONOPIN Prenate Chew MX 15 ARI 15 M 145 G 5008 G 70 PX 44-527 EP 139 4008 U3761 RZT SJ 646 Z315 15 mg