Slimming Down Your Cocktails: Tonic Water or Club Soda?

Don’t confuse tonic water with club soda. While club soda contains zero calories, tonic hides some sugars. Van Tiel’s choice: Q Tonic. Made with real, not synthetic, quinine, the agave-sweetened tonic has about 60% fewer calories than regular tonic water (24 calories vs. 55 calories per 5 oz).