This results in a decrease of fasting and postprandial glycemia, as well as HbA1c levels. Since miglitol works by preventing digestion of carbohydrates, it lowers the degree of postprandial hyperglycemia. Dietary recommendations for reactive hypoglycemia can help to relieve symptoms of postprandial syndrome. An extract from the bark has been shown in rats to reduce postprandial hyperglycemia. Insulin also can cause postprandial somnolence via another mechanism. KFDA approved the safety and function of tagatose for controlling postprandial blood glucose level. Genetics is likely to have some impact on the risk of postprandial hyperinsulinemia. This allows larger amounts of active monomeric insulin to be immediately available for postprandial injections. In order to minimize this potentiation, postprandial administration (taken after meals) of moclobemide is recommended. Alcohol taken with a meal increases and prolongs postprandial triglyceridemia. The term "postprandial" is used in many contexts. Postprandial hyperglycemia is a risk factor associated with diabetes. Postprandial hyperglycemia (PPHG) is primarily due to first phase insulin secretion.