The present invention relates to a pharmaceutical composition or a nutraceutical composition or a medical device or a supplement product for use in the preventive and/or curative treatment of polycystic ovary syndrome (PCOS) and of the metabolic disorders deriving from or connected to polycystic ovary syndrome. Moreover, the present invention relates to a pharmaceutical composition or a nutraceutical composition or a medical device or a supplement product for use in reducing the lipid profile and the degree of hirsutism in insulin resistant and hyperandrogenous women affected by polycystic ovary syndrome - PCOS.