There is an interaction between oral medications and diet, on the one hand, diet has a certain effect on the absorption of drugs, on the other hand, drugs on the gastrointestinal tract may produce stimulation, causing nausea, vomiting and other uncomfortable symptoms. Before taking drugs need to clarify the time of drug taking. Drugs taken orally after meals should be taken 0.5 to 1 hour after meals, which can make the drugs work better in the body and also reduce the stimulation effect of the drugs on the gastrointestinal tract. Different medications have different dosage times and dietary requirements, and it is best to consult your doctor or pharmacist for advice before taking medications.