一、口服药与饮食的关系药物是人类用来防治疾病的物质,当它与机体或病原体相互作用时,便产生药理作用。因为口服药要通过消化道,所以一般根据饮食时间决定给药次数和方法。如空腹时药物在胃内停留时间最短,发挥作用快。如四环素在饱腹时就比空腹时的血药浓度低50～80％。因此,要根据药物的性质和治疗的目的来决定口服药的方法。 1.空腹服药:指清晨空腹。因为胃和小肠基本没有食物,使药物能充分吸收,发挥作用快。如抗结核药利福平,空腹服药后两小时血药浓度可达高峰,并且很快分布到全身。其它如某些驱虫药或盐类泻药如硫酸镁、硫酸钠也 First, the relationship between oral medicine and diet Drugs are used by humans to control diseases, when it interacts with the body or pathogens, they produce pharmacological effects. Because oral medication to pass through the digestive tract, it is generally based on diet time to decide the frequency and method of administration. Such as fasting drug stay in the stomach the shortest time, play a role in fast. Such as tetracycline when full than the plasma concentration of fasting 50 to 80% lower. Therefore, according to the nature of the drug and the purpose of treatment to determine oral medication. 1. Fasting medication: refers to the morning fasting. Because the stomach and small intestine basically no food, so that drugs can be fully absorbed, play a role fast. Such as anti-TB drug rifampicin, two hours after fasting blood concentration reached its peak, and quickly distributed to the body. Others such as certain deworming drugs or saline laxatives such as magnesium sulfate, sodium sulfate also