“I don’t think there is any quinine in tonic water anymore”
Sure it does, at least the Schweppes in my Fridge does, says it right on the label. Medicinal amount is a big unknown? Quinine is what gives Tonic water the unique flavor.
Just an update to what I mentioned above. Quinine and chloroquine are not the same thing / drug.
https://wikidiff.com/chloroquine/quinine