Pill Identification by Imprints: STO 50 Home Pill Identification by Imprints: STO 50 1 result CARBIDOPA-LEVODOPA-ENTACAPONE 12.5-50-200 MG TAB Side 1: STO 50 Color: Brownish Side 2: Shape: Round Other Popular Drug Imprint G 421 W28 logo and 665 E 211 A028 GG 26 RX693 WC-002 or WC 44-542 WAR 3 GG 65 OS 212 54 162 AA 820 216 WATSON 383 or WATSON 8 06 PA1000 logo and 35 Mucinex BP 706 581 835 APO 014 15/30 or P1 REGLAN LIMBREL 52002 MYLAN ZE 40 MS K 56 45 mg L41 HH205 14 A3 54 341 PA1 784 Z 300 99