Mealtime taking generally means that the medication and food are taken at the same time. Having a certain amount of food in the stomach reduces drug irritation while avoiding reactions such as nausea and is more conducive to drug absorption. For example, hypoglycemic drugs are very fast-acting, immediate effect, can play a role in lowering sugar immediately after taking. If taken before meals, may not be synchronized with the increase in blood glucose caused by meals, easy to cause hypoglycemia, so it is recommended that this case meal time to take. In addition to hypoglycemic drugs, there are also some drugs should be taken at the same time as the meal, such as α-glucosidase inhibitors, inhibit the special hydrolysis in the small intestine to promote the absorption of sugar in the staple food, so that we only take with the meal in order to play a better role. Different drugs for the treatment of disease needs are different, the time to take the drug will also have requirements, the drug should follow the doctor’s instructions, to avoid their own random drug caused by adverse reactions.