So how much vitamin C should you take? Dr. Linus Pauling studied vitamin D for 25 years and concluded the ideal amount of vitamin C is 400mg per day. In these studies I mentioned in the video, they used high dose vitamin C through and IV. Doses of about 5,000mg daily. Doses that high must be done through an IV otherwise you will hit saturation point within the gut and get severe diarrhea. It’s important to note that in the studies that increased life expectancy in the cancer patients, they didn’