The invention relates to soft drink industry, in particular, to dietetic nutrition. The inventive weight reducing composition comprises 0.01-10 mg/l of sodium and 25-150 mg/l of magnesium, the rest being water. Said composition (drinking water) makes it possible to reduce weight without altering the usual eating habits. In addition, consumption of said drinking water results in reduction of weight by 1.2-2.9 kg.
