As far as hydroxychloroquine is concerned, the National Institute of Health already vetted this medicine in 2005 as inhibitor of corona virus and its spread.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1232869/

Currently it's only politics and corporate profits that is being played at the expense of health so they can make lot of money by mandating more expensive vaccine that needs to be taken every year.