Dr. Carter explains that Vitamin C, especially at higher than RDA doses, provides numerous benefits due to its antioxidant and anti-inflammatory properties, including reducing chronic diseases like heart disease; lowering blood pressure by improving integrity of blood vessels; and boosting iron absorption. High-dose vitamin C has been shown to improve memory by increasing blood flow and reduce severity and duration of viral diseases, including the common cold. 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 co·ro·na·vi·rus : any of a family (Coronaviridae) of single-stranded RNA viruses that have a lipid envelope studded with club-shaped projections, infect birds and many mammals including humans, and include the causative agents of MERS, SARS, and COVID-19 and the disease, COVID-19 \ ˈkō-vid-nīn-ˈtēn : a mild to severe respiratory illness that is caused by a coronavirus (Severe acute respiratory syndrome coronavirus 2 of the genus Betacoronavirus), is transmitted chiefly by contact with infectious material (such as respiratory droplets), and is characterized especially by fever, cough, and shortness of breath and may progress to pneumonia and respiratory failure. . 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.