During the taking of drugs how to meal preparation is very delicate, meal preparation is reasonable, can promote the absorption of drugs, enhance the effectiveness of drugs, reduce or avoid the occurrence of adverse reactions; on the contrary, it will reduce the effectiveness of drugs, and even toxic side effects. 1, take intestinal soluble drugs: such as vitamins A, D, E should eat fatty foods, which is conducive to the absorption of drugs, in order to improve the efficacy of the purpose. 2.When taking diuretic drugs: you should eat more potassium-rich foods, such as grapes, oranges, bananas, potatoes, watermelon, winter melon, etc. To supplement the potassium deficiency in the body. At the same time to enter the low sodium salt food, which can improve the diuretic effect of the drug. 3, when taking iron such as ferrous sulfate: should eat vegetables and fruits rich in vitamin C, in order to increase the solubility of iron salts, conducive to absorption. But avoid tea, because tea contains tannic acid, can form a complex with iron ions and precipitation, so that the body can not be absorbed. 4.After taking anthelmintic drugs: you should eat more vegetables containing more fiber such as radish, potato, groundnut, bean sprout and tomato to enhance intestinal peristalsis and promote the discharge of worms with feces. 5.When taking antipyretic net: you should eat less food with high sugar content, because antipyretic net and food containing more sugar can form a complex, reducing the initial absorption rate. 6.When taking POTUS: salt should be avoided, try to eat low-salt or salt-free food, which can reduce the swelling and blood pressure increase caused by POTUS. 7.When taking furanzide precipitated: urotropine, you should eat more acidic food, such as meat, fish, chicken, bread, corn, lentils, etc., which can increase the effective concentration of urine and enhance the antibacterial effect of the drug. 8, when taking hypoglycemic drugs: should eat low-sugar food, such as chicken, eggs, fish, beef, soy products, gluten, vegetables, etc. 9, during taking contraceptive pills: should eat more food rich in folic acid and vitamin B6, such as green leafy vegetables, liver, kidney, protein, beans, etc.