However, this is not likely to happen as the quantities used in drinks today is considered minimal and extremely unlikely to pose a risk.
For example, the amount of quinine found in half-a-litre of tonic water – assuming it contains 83 ppm – equals about 41.5 milligrams, but malaria treatments often contain about 540mg or more and are recommended three times a day.
This means that malaria treatments involve taking 40 times more than is found in half-a-litre of tonic water.
Quinine and tonic water have the potential to react adversely to some medications, as well, so they should be avoided by people on:
- Blood thinners
- Antacids, seizure medications