This malaria drug my be old and “cheap” but hardly a bargain GoodRX asks $75.00 for 30 500mg. tablets. The same quantity at 5 or 10 cents a 500mg tablet would be $1.50 to $3.00. Below are some recent links for high Vitamin C treatment.
Dr. Cathcart (see first link) has treated 9,000 patients with high C doses over 10 years. For a person with some medical knowledge, this link has useable details on how to treat at home with high Vitamin C doses, if hospital is not available. I have also found that when I used or gave to family high doses with fever, the fever would always drop 2 degrees in a half hour. Vitamin D has also been found helpful. I now take 2000 to 5000 IU of D depending on the season. This is in addition to the 3 to 6 grams of C I take daily for my allergies. You can also demand that the hospital treat you or your loved one with the intravenous form of C, and have your lawyer on call if they object.
http://www.doctoryourself.com/titration.html [Long and very detailed. If intravenous is not available, crush C and drink in water]
https://clinicaltrials.gov/ct2/show/NCT04264533 [This official NIH site reports on the Chinese high Vitamin trial(s?) being run in China. A detailed explanation of other tests of high C that showed conflicted or confusing or weak results can be answered by reading the link above.]
https://nypost.com/2020/03/24/new-york-hospitals-treating-coronavirus-patients-with-vitamin-c/
[New York is the first area I have seen reported on that is now exploring the value of high Vitamin C in saving Covid-19 case lives. What they consider high dose may not come close to Dr. Cathcart’s experiences.]
It is cheap relative to just about any of the other drugs touted as "mainstream" treatments, and ENORMOUSLY cheaper than a hospital stay.