Enjoy fresh Diet Tonic in the comfort of your home with the Sodastream Diet Tonic Soda Mix. The Sodastream system lets you make carbonated beverages by the glass so your drink is always crisp and refreshing. Keeping fresh, bubbling diet tonic water around your house is no longer a challenge thanks to Sodastream and this awesome, reduced-calorie mix. Perfect for entertaining or for the occasional mixed drink, this Diet Tonic Mix is sure to be hit.