In general, it is best not to drink milk immediately after drinking the medicine, which may cause the absorption of the components of the drug to be affected, reducing the efficacy of the drug. Unless otherwise specified, it is best to drink the medicine with warm water, so that there will be no interaction with the drug, more conducive to the absorption of the drug and play a role in the body. Milk contains a lot of protein, which can protect the gastric mucosa. When drinking milk, milk is easy to attach to the mucous membrane of the digestive tract, affecting the absorption of drugs by the mucous membrane of the digestive tract and affecting the therapeutic effect of drugs. In addition, calcium and magnesium ions in milk and drugs may also react with the drugs and so on. And some people are intolerant to lactose in milk, which can easily cause bloating, diarrhea and other symptoms after drinking milk. These people are even more unsuitable for drinking milk after drinking medicine, because lactose can not be completely decomposed and absorbed, it will stimulate the intestinal tract, causing increased intestinal peristalsis, affecting the absorption of drugs.