It is generally recommended that the vaccine be administered 3 to 7 days after the anti-inflammatory medication is discontinued. After entering the body through the digestive tract, anti-inflammatory drugs are absorbed from the stomach and small intestine into the bloodstream, and then transported to the liver and kidneys for metabolism and excretion. Generally, anti-inflammatory drugs can be completely metabolized in the body in about 3~7 days. When the anti-inflammatory drugs are not yet fully metabolized, vaccination, as anti-inflammatory drugs are prone to nausea, vomiting, dizziness, headache, chest tightness, drowsiness and other reactions, these symptoms are similar to the gastrointestinal adverse reactions (nausea, vomiting, loss of appetite, etc.) and systemic adverse reactions (fever, fatigue, dizziness, headache, etc.), which are similar to those of the vaccine, so it is difficult to distinguish whether the discomfort is due to the vaccine or due to the use of the anti-inflammatory drugs. It is difficult to distinguish whether the discomfort is caused by vaccination or anti-inflammatory drugs. Therefore, it is generally recommended that vaccinators stop taking anti-inflammatory drugs for 3-7 days to eliminate or reduce the effects of the drugs on the body and then receive the vaccine.