Let's go over some common children's ailments and recommend some possible herbal remedies for them. Also, eat seasonally appropriate foods. Give 1 drop per 2 pounds of body weight every few hours. Avoid too much juice. Give tea and broth instead, with only small amounts of juice.
Water is great too.
Of course if all the child will drink is juice, give it to keep the child well hydrated, especially if fever is present, but it is preferable to dilute it with water or teas. Also, we use a recipe that my kids all love. It may sound weird but the taste grows on you, and it is very effective and beneficial. It is garlic lemonade. Prepare by chopping three cloves of garlic and steeping it in 4 cups of boiling water for an hour.