Disclosed is a composition including a pyrazino-triazine derivative and a pharmaceutically acceptable salt thereof. The composition includes a solubilizer or a stabilizer and thus can exhibit very excellent solubility and stability.本發明揭示一種包括吡縧-三縧衍生物及其醫藥學上可接受之鹽之組成物。該組成物包括增溶劑或穩定劑,並因此可展現出極優良之溶解度及穩定性。