Anyone who believes Quinine in tonic water is ineffective is an idiot.
If Quinine has no effect on virus infections, why would Big Pharma go to the trouble and expense to manufacture an ANALOGUE of the original?
Natural products can't be patented, but the analogues can.
I have a nasty residual lung problems, lots of mucus, which I had treated with antibiotic (they thought it was Pneumonia) December last year, but a few glasses of tonic water, and it's cleared up.