You know I’m not sure but I had posted few comments up, about a natural remedy would be great immune booster if anything grapefruit peels have quinine in it, as well as tonic water just be cautious of sugar content and any meds that could conflict just in case! Hopefully that helps. The tonic water helped for my inflammation not that I do that all the time. But now I’ve been taking true gold tumeric from Health Ranger. Trying to stay away from pharmaceuticals. Not trying to give medical advice. Just sharing what’s helped me rather than taking another pharmaceutical I’ve had my far share.