When taking western medicine, there are generally about six taboos: 1, avoid milk: tetracycline and oxytetracycline can not be taken with milk, blood herb, capers, salted fish, snails, mussels, soybeans and tofu and other foods containing calcium and magnesium. Because these drugs can be combined with calcium and magnesium to form a complex, preventing the absorption of the drug, thereby reducing the effectiveness of the drug. Iron can not be taken with milk, pork liver, peanut rice, kelp, sesame paste and other high calcium, high phosphorus food, because calcium can make the gastrointestinal contents become alkaline, so that phosphorus and iron easily combined into insoluble complexes, preventing the absorption of iron. 2, avoid water: take lozenges and cough syrup can not drink water, water can weaken its laryngeal effect and the protective effect on the laryngeal mucosa, so that the effectiveness of the drug is reduced. 3, avoid sugar: bitter stomachic drugs such as tincture of gentian, stomachic, such as served with sugar, it lost the use of its bitter taste and stomachic role. 4, avoid fish: take isoniazid can not be taken with fish containing histamine, otherwise the histamine into the body, will not be destroyed and cause poisoning. 5, avoid alcohol: take methotrexate, dysentery, eugenol and other drugs can not drink alcohol at the same time, because these drugs can increase the sensitivity to alcohol and nausea, vomiting, diarrhea, abdominal pain and other toxic side effects. Aspirin-type drugs are inherently irritating, and if you drink alcohol at the same time will increase the irritation. Drugs that inhibit the nerve center, such as barbiturates, after drinking alcohol can strengthen the inhibitory effect, causing toxic reactions. 6, avoid tea: tea and coffee contain a lot of caffeine, with a stimulant effect, so when taking sedative drugs can not drink tea at the same time. Tea and contains a lot of tannic acid, so taking multi-enzyme tablets, pepsin, ephedrine, atropine, tincture of belladonna, digitalis, iron and baking soda can not drink tea at the same time.