Black Tea drinks with inulin and dextrin reduced postprandial plasma glucose fluctuations in patients with type 2 diabetes: an acute, randomized, placebo-controlled, single-blind crossover study

Background This study evaluated the effects of black tea drinks with inulin and dextrin (BTID) on postprandial plasma glucose (PG) in patients with type 2 diabetes mellitus (T2DM). Methods An acute, randomized, double-blind, placebo-controlled, crossover clinical trial was carried out on T2DM patients. The subjects were randomly assigned to groups consuming placebo black tea powder or BTID (identically packaged) followed by a mixed meal tolerance test (MMTT). Afterwards, individuals who initially consumed BTID were given the placebo and those who initially consumed the placebo were given BTID. Results A total of 35 patients were included in the study, and 32 completed the study. Compared to placebo, BTID significantly reduced the change in glycaemia at 30 min, 1, 2, and 3 h during the MMTT. In the analysis of PG fluctuations at 2 h during the MMTT, the proportion of patients with minor PG fluctuations (