The invention refers to new methods for treating spontaneous tumors in humans of the Central Nervous System, more particularly of 3rd and 4th grade tumors, even more particularly gliomas, and is related to the administration of compositions comprising therapeutically effective amounts of resveratrolosides and curcumins, in particular natural extracts comprising said two components. The invention also relates to the realization of pharmaceutical and nutraceutleal compositions comprising resveratrolosides and curcumins. More specifically, the invention relates to compositions formulated for the release of active components for sublingual administration.
