The Effect of Metamucil on Postprandial Blood Glucose and Plasma Gastric Inhibitory Peptide in Insulin‐dependent Diabetics

Postprandial hyperglycemia was significantly (p<0.05) reduced during administration of the fibre supplement Metamucil in nine insulin‐dependent diabetics. A similar but less pronounced effect was also found on the plasma gastric inhibitory polypeptide secretion. Six subjects noted an increased frequency of hypoglycemic episodes, and reductions in insulin dosage might have been necessary if the experiment had continued longer.