Nitric Oxide (NO) looks promising
https://www.ctvnews.ca/health/coronavirus/could-a-simple-gas-produced-by-our-bodies-be-used-to-treat-covid-19-canadian-trials-underway-1.4962611
Nitric oxide, a two-part nanomolecule made in the cells that line the blood vessels, is being examined as an experimental treatment for the disease caused by the novel coronavirus. Studies show it plays a role in helping to relax blood vessels and open the airways in the lung -- critical in treating those with advanced cases.
Nitric Oxide has many properties -- it’s produced by cells that line our blood vessels to helps control blood pressure and open the airways in the lung, allowing more oxygen to be absorbed.
But researchers have also found nitric oxide has a antibacterial and antiviral effect.
SaNOtize's nasal spray is designed designed to “disinfect” your upper airway using nitric oxide. Initial tests of the company's product suggest that the spray inactivated more than 99.9 per cent of SARs-CoV-2, the virus that causes COVID-19, within two minutes during laboratory tests.
They just got funding for phase 2 clinical trials. Side effects include hypotension (too low blood pressure) and possible headaches (migraines). So don't just go self medicating! So far the gas has mostly been used for premature babies.
Discovered in the 1980s, nitric oxide is already approved for use in helping improve oxygen levels in premature babies and is used in some cardiac procedures and drugs for erectile dysfunction.
(Kinda odd they say it was discovered in 1980, NO was discovered in 1772. But for medical purposes and biological processes, they are correct)
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