The present invention relates to the use in therapy of 6-((4-(2,3-dimethylphenoxy)piperidin-1-yl)methyl)pyrimidine-2,4(1H,3H)-dione or a pharmaceutically acceptable salt thereof, including use as an anti-mycobacterial, for example in the treatment of tuberculosis; compositions containing 6-((4-(2,3-dimethylphenoxy)piperidin-1-yl)methyl)pyrimidine-2,4(1H,3H)-dione; combinations comprising 6-((4-(2,3-dimethylphenoxy)piperidin-1-yl)methyl)pyrimidine-2,4(1H,3H)- dione or a pharmaceutically acceptable salt thereof and salts of 6-((4-(2,3-dimethylphenoxy)piperidin-1-yl)methyl)pyrimidine-2,4(1H,3H)-dione.本發明關於6-((4-(2,3-二甲基苯氧基)哌啶-1-基)甲基)嘧啶-2,4(1H,3H)-二酮或其藥學上可接受之鹽用於治療上的用途,包括用作,舉例來說,治療結核病的抗分枝桿菌藥;含有6-((4-(2,3-二甲基苯氧基)哌啶-1-基)甲基)嘧啶-2,4(1H,3H)-二酮的組成物;包含6-((4-(2,3-二甲基苯氧基)哌啶-1-基)甲基)嘧啶-2,4(1H,3H)-二酮或其藥學上可接受之鹽的組合物,以及6-((4-(2,3-二甲基苯氧基)哌啶-1-基)甲基)嘧啶-2,4(1H,3H)-二酮之鹽。