If you want to boost your child's immune health, you may wonder which are the best supplements for your child to help boost their natural defences to fight off infections.   Key Immune Supplements When it comes to strengthening our immunity, there are some key nutrients and antioxidants our immune system requires, and a deficiency in any of these can make you more susceptible to illness. Here are my 4 top supplements to strengthen your child's immunity. Vitamin C Effective at reducing the length and severity of a cold. Vitamin C is also a potent antioxidant and is involved in virus killing and preventing viral replication.   Vitamin D Our key immune...