Z Pack check
Zinc 50mg check
Cinchona Bark Powder (from which Quinine is made) not check still waiting for an Amazon order to ship, if it ever does.
Don’t bother with the bark:
https://www.alcademics.com/2014/08/potential-dangers-of-homemade-tonic-water.html
We can’t get to a decent therapeutic dose without the alkaloids. A safe, self-made version would be fairly less benefit than you can get with EGCG and/or Quercetin. You can get a fraction there, but even with three coffee filters, you are playing with the remaining alkaloids there with your wanted quinine.
I looked into this about two months ago.