Tohoku Rakuten Golden Eagles infielder Japhet Amador has been suspended for six months after testing positive for banned substances, Nippon Professional Baseball announced Thursday afternoon.

Amador's suspension began the same day and will last until Feb. 8, 2019.

According to NPB, Amador was tested following a game against the Chunichi Dragons on June 13, in Sendai. His sample came back positive for chlorthalidone and furosemide on June 23. The two substances are included under diuretics and masking agents on a list of prohibited drugs on the World Anti-Doping Agency's website.