One of the best methods to increase our immune system is to take care of hygiene. Equally important is to make sure we eat and drink healthy stuff, like organic produce and clean water.
Sometimes our body demands extra, so the question is: does Vitamin C boost your immune system?
Linus Pauling is the only scientist so far that received 2 Nobel prizes in 2 different areas (Chemistry and Peace) not been shared with somebody else. In 1970 he wrote Vitamin C, the Common Cold and the Flu. In this book, he emphasizes the importance of Vitamin C. Grams of Vitamin C.