The subject of the invention is an isotonic beverage with chelates containing carbohydrates, mineral amino acid chelates, L-carnitine, sweeteners, flavouring substances, and a diluent, the essential feature of the beverage being the content of up to 0.1 wt % of mineral components in the form of mineral amino acid chelates, preferably bisglycinates and glycinates, from 0.1 to 50 wt % of isomaltulose, up to 15 wt % of L-carnitine and/or its derivatives, from 5 to 84% of carbohydrates, up to 50 wt % of bioactive substances, up to 50 wt % of flavouring substances, up to 80 wt % of polyalcohols, diluents, tableting aids, stabilizers, antioxidants, dyes, and 0.013-25 wt % of sweeteners, whereby its osmolarity is 275-295 mOsm/kg and pH is 2-5.