There are many reasons for fever, but what we often see is mainly a fever caused by a cold. If you encounter such a situation, you can give your child some high-quality vitamin C and other comprehensive vitamins and substances, of which vitamin C is more every time. Take it for a day or two in a short time, and the child's fever will go away. The dosage of high-dose vitamin C varies from person to person. Drink plenty of water during taking large doses of vitamin C to promote the excretion of toxins in the body.