Thanks Lyle. This is credible.

Its possible zinc could slow down viral replication of covid19.
Viruses fall into 2 broad categories - the 'hit and run' viruses like flu, and the 'hit and stay' viruses like herpes.
Viruses evolved in parallel to humans which is why viral survival strategies are extremely advanced. Viruses even mimic elements of the human immune system. Random selection of viruses over eons is how they achieved this.
Coincidentally I picked-up some 'Indian Tonic Water' from the supermarket this morning. I like the taste of it.