PURPOSE: A low-caloric food and drink containing Gymnema sylvestre (GS) as an enteric absorption inhibitor of glucose, and effective for preventing obesity.

CONSTITUTION: A low-caloric drink and food containing Gymnema sylvestre (GS) (prepared by dipping dried leaves of a plant of the family Asclepiadaceae naturally growing in India, Africa and China in an aqueous solution at 60°C for 5hr, and adjusting the pH of the solution to 3, depositing and precipitating the solution) as an enteric absorption inhibitor of glucose. These are drink and food developed by stopping to take the blood sugar value as a standard, and directly measuring the absorption of glucose from the intestinal tracts.

EFFECT: The inhibitory effect of the GS on absorption of glucose prevents the obesity while avoiding the frustration for sweetness, etc., and the drink and food are low-caloric drink and food effective for patients with diabetes.