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Overview. 1  Quinine, a bitter tasting powder made from the bark of the cinchona tree, is known mainly for its use in malaria treatment. 2  Tonic water, a bitter liquid sometimes used as a mix for alcoholic drinks, contains only a small amount of quinine compared to quinine medications.
Tonic water, also known as Indian tonic water, is a soft drink, carbonated in nature with an additive called as Quinine, which is commonly used in combination with other drinks, like gin. Quinine is actually a medicine, which was used as a prophylactic agent against malaria, whose content has been reduced in tonic. Since it has medicinal effects due to addition of quinine, it got the name Tonic. Tonic water was intended to be used in South Asian and African regions, which has high cases of malaria.