Vitamin C is a basic essential that should be part of your monsoon diet if you need to work on your immune system. It is known to combat various types of illness but should mainly be utilised to bolster one's immunity. Fruits such as oranges, bananas, apples, grapes and more are vital vitamin C foods. They also have antioxidant functions that enable working on severe infection, especially acute respiratory distress syndrome. It is an ideal addition to your diet and a necessary one.