降糖药的降糖效果,除与药物本身的作用有关外,还与服药剂量和服药时间有一定关系。凌晨服药目的是降低空腹高血糖。有些病人,睡前至凌晨三四点钟血糖控制较好,自三四点后血糖升高,到六七点时进入高峰,血糖可达10毫摩尔/升左右,称“黎明现象”。此时的高血糖显然与晚餐进食过多或降糖药用量不足无关, Hypoglycemic hypoglycemic effect, in addition to the role of the drug itself, but also with the dose and medication time has a certain relationship. The purpose of early morning medication is to reduce fasting high blood sugar. Some patients, before going to bed to three o’clock in the morning to control blood sugar better, since three or four o’clock after the blood sugar increased to six or seven o’clock into the peak blood glucose up to 10 mmol / l or so, "dawn phenomenon . Hyperglycemia at this time is obviously excessive dinner or hypoglycemic drugs have nothing to do with the amount,