Federal Trade Commission (FTC) pursued the ACAM, an organization that promotes "complementary, alternative and integrative medicine" over the claims made regarding the treatment of atherosclerosis in advertisements for EDTA chelation therapy
Bourgonje et al., N-Acetylcysteine and Hydrogen Sulfide in Coronavirus Disease 2019, Antioxidants & Redox Signaling, doi:10.1089/ars.2020.8247
Out of that conversation comes a recommendation
Preventative Potential: Evidence suggests these drugs are most effective as a preventative measure before cognitive impairment becomes established, rather than as a cure for advanced cases
Taking L-arginine can reduce symptoms and make life better, even for those with severe cases [19]
Gentle Mixing: Never shake the vial vigorously