How long after the child’s vaccination can take medication is divided into two cases, if it is our usual supplementation of vitamin A, vitamin D, calcium, zinc, iron, vitamin C and other trace elements, in this case the vaccination is not affected, you can continue to take. If you need to take other drugs, it is recommended that your child take other drugs orally 3 days after the vaccination. For example, if the child has a respiratory infection, gastrointestinal infection or other disease states, if the condition is not particularly serious, you can consider using the medication 3 days after the vaccination. If the child has a fever or other emergency situation, you do not need to consider the vaccine factor, and treat the disease first.