SodaStream x Classics Diet Tonic syrup brings the perfectly balanced, sugar free taste of classic tonic water to your home, letting you create your favourite flavoured sparkling water in seconds. Our Diet Tonic syrup mix is carefully crafted to deliver the crisp, refreshing tonic flavour you know and love, with zero sugar and great taste. When used with any SodaStream sparkling water maker, you can customise the fizz to suit your preference. You can also use less syrup for a lighter taste or mix it with other SodaStream flavours to create unique drinks — it's as easy as FIZZ, MIX, and ENJOY! (Always carbonate before adding syrups).