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.