Effects of D-allulose (Psicose) With Sucrose Beverage on Glucose Tolerance and Insulin Level

Randomized, double-blind, crossover-trial, 30 subjects in each groups, either males or females, normal fasting glucose or pre-diabetes, aged \> 18 years old to perform oral sucrose tolerance with either one of the 5 study products 1. Sucrose 50 g 2. Sucrose 50 g + D-allulose (psicose) 2.5 g 3. Sucrose 50 g + D-allulose (psicose) 5 g 4. Sucrose 50 g + D-allulose (psicose) 7.5 g 5. Sucrose 50 g + D-allulose (psicose) 10 g Primary endpoints: 1. To investigate the dose-response effects of D- allulose (psicose) with sucrose beverage on glucose tolerance 2. To investigate the dose-response effects of D- allulose (psicose) with sucrose beverage on insulin levels