Dr. Carter explains that vitamin C is available in several forms; pill, gummies, liposomal, powder, and intravenous. All forms of vitamin C are valuable to reduce symptoms from viral infections including the coronavirus and the disease, COVID-19. Pills, gummies, and powder spend time in the gut and, at high doses, may lead to diarrhea. However, the liposomal version, taken orally, is encapsulated, has less impact on the gut, and is more readily absorbed into cells. The intravenous form requires a healthcare professional to administer and cannot be done at home. Dr. Carter recommends high doses of vitamin C. He also recommends people perform a self-tolerance test by dosing vitamin C at 1 gram every hour until stools become lose. This determines your vitamin C tolerance. Even at this high dose, vitamin C is NOT toxic. Once you know your tolerance level, you can then take 75% of that daily if you have viral disease symptoms. For example, if you experience lose stools at 20 grams, then you can take up to 15g/day without any side effects. In this case, you would take 5g of vitamin C 3 times each day. Vitamin C has substantial evidence as presented in another video.