The Best Tonic Water for Cocktails, According to Bon Appetit Editors
The bark of the cinchona tree had healing properties due to quinine, a compound that prevents malaria-causing parasites from reproducing, though tonic's quinine level is low.
12 Little-Known Facts About The Gin And Tonic - Tasting Table
"Genever... became a self-prescription for soldiers during the 17th-century Thirty Years' War, who claimed it gave them strength and calmed their nerves."