Some people usually like to drink tea, but also drink tea to take medicine. In fact, some drugs can't be taken with tea, because tea reacts with drugs in the stomach, which will reduce the curative effect of drugs. Drugs that can't be taken with tea are (1) digestive AIDS, such as multi-enzymes, pancreatin, pepsin, amylase, etc. These enzymes are all protein. Tannic acid in tea will precipitate when combined with protein, thus reducing the curative effect. (2) Iron agents, such as ferrous sulfate, ferrous fumarate, ferrous lactate, ammonium ferric citrate, etc. If the iron contained in these drugs is combined with tannic acid in tea, it can produce iron tannic acid precipitation and hinder the absorption of iron agent. (3) alkaloids ephedrine hydrochloride, atropine sulfate, belladonna tincture, compound weishuping, codeine phosphate, etc. These drugs combine with tannic acid in tea to precipitate insoluble alkaloids, which hinders drug absorption. (4) sedative and hypnotic drugs. These drugs antagonize each other with tea, reducing the efficacy, thus failing to achieve the purpose of sedation and hypnosis. (5) Cardiotonic drugs such as digitalis, digitalis glycoside and digoxin can also react with tannic acid in tea, thus reducing the efficacy. Monoamine Oxidase Inhibitor This drug can inhibit monoamine oxidase in heart, liver and brain tissues and increase the content of norepinephrine after oral administration. Caffeine in tea stimulates adrenaline, leading to a large increase in norepinephrine. If the two drugs are taken at the same time, they can promote each other, leading to a sharp rise in blood pressure in China, leading to hypertensive crisis or cerebral hemorrhage. (Lacquer) The antibiotic erythromycin can inhibit theophylline metabolism and increase the toxicity of theanine, so taking erythromycin with tea can cause theophylline poisoning symptoms such as nausea and vomiting. Tannic acid in other medicinal teas will hinder the absorption of rifampicin and reduce its curative effect; Sodium bicarbonate can decompose with tannic acid in tea, making the drug lose its curative effect; Rhubarb soda tablets, Jianwei tablets and Xiaoer Xiaoshi tablets all contain sodium bicarbonate, so it is not advisable to drink tea at the same time when taking medicine; Dipyridamole can increase adenosine cyclophosphate in myocardium, and caffeine in tea can fight adenosine, so it can't be taken at the same time.