Rated 4 out of 5★ by 4reviewers.
Rated 4 out of 5★ by 007GrannyK Good but expensive All the other Sodastream flavors are reasonably priced but the diet tonic is not. The good news is that you only need to use half as much as they recommend. 04/26/2013
Rated 5 out of 5★ by Tobylady The diet Soda Stream is Excellent. Shipping high. We love this Diet Tonic, but Walmart won't give the option to have it sent to the store. We had to pay a high price for shipping, which removes any price advantage their might have been. We recommend that the Diet Tonic and Caffeine Free Diet Pepsi be carried in your store at all times or has free shipping. 10/08/2013
Rated 4 out of 5★ by IrritableGourmet Pretty close in taste This tastes a bit more bitter than regular tonic water, but is still pretty close. My only other issue is that it's not available in stores. 12/11/2013