VITAMIN C AND ITS APPLICATION TO THE TREATMENT OF nCoV CORONAVIRUS
How Vitamin C Reduces Severity and Deaths from Serious Viral Respiratory Diseases
(OMNS February 10, 2020) Most deaths from coronavirus are caused by pneumonia. Vitamin C has been known, for over 80 years, to greatly benefit pneumonia patients.
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McCormick gave 1000 mg vitamin C intravenously, followed by 500 mg orally every hour. He repeated the injection at least once. On the fourth day, his patient felt so well that he voluntarily resumed work, with no adverse effects. 
In 1944 Slotkin and Fletcher reported on the prophylactic and therapeutic value of vitamin C in bronchopneumonia, lung abscess, and purulent bronchitis. “Vitamin C has greatly alleviated this condition and promptly restored normal pulmonary function.” 
Slotkin further reported that:
According to the US Centers for Disease Control, there are about 80,000 dead from annual influenzas, escalating to pneumonia, in the USA. Coronavirus is a very serious contagious disease. But contagion to a virus largely depends on the susceptibility of the host. It is well established that low vitamin C levels increase susceptibility to viruses. 
Vitamin C lowers mortality
It is one thing to be sick from a virus and another thing entirely to die from a viral-instigated disease. It must be emphasized that a mere 200 mg of vitamin C/day resulted in an 80% decrease in deaths among severely ill, hospitalized respiratory disease patients. 
A single, cheap, big-box discount store vitamin C tablet will provide more than twice the amount used in the study above.
And yes, with vitamin C, more is better.
Frederick R. Klenner and Robert F. Cathcart successfully treated influenza and pneumonia with very high doses of vitamin C. Klenner published on his results beginning in the 1940s;  Cathcart beginning in the 1970s.  They used both oral and intravenous administration.
A recent placebo controlled study concluded that “vitamin C should be included in treatment protocol of children with pneumonia so that mortality and morbidity can be reduced.” In this study, the majority of the children were infants under one year of age. By body weight, the modest 200 mg dose given, to tiny babies, would actually be the equivalent of 2,000-3,000 mg/day for an adult. 
Although many will rightly maintain that the dose should be high, even a low supplemental amount of vitamin C saves lives. This is very important for those with low incomes and few treatment options.
We’re talking about twenty cents’ worth of vitamin C a day to save lives now.
Link to References: http://orthomolecular.org/resources/omns/v16n09.shtml