Thirsti Flavored Water Drops, ZERO SODA Root Beer, Classic Soda Flavors, Sparkling or Still, Zero Calories, Zero Sugar, Makes 17, 12oz drinks, 3 Pack, WCFRTBRAM

Tastes just like a can of pop, love them for my machine

I did have to add like a teaspoon of sugar, but the cola one tastes just like Diet Coke. I used this in my soda stream and it works perfectly. Highly recommend these!

Okay, I am diehard Diet Cokeaholic. My son gave me a Ninja Thirsty for Christmas so I’ve been buying different flavors to try. I had a SodaStream years ago but I was never impressed with it, especially their diet cola. Yuck. When I saw that Ninja had one, I was skeptical but thought I was give it a try. Well, color me impressed! It is really good! I really like it! I haven’t done a side-by-side taste test, so I’m not sure how it actually compares, but that’s okay because it is really good! The best part is, with my Thirsty, I can add another flavor with it too! Okay, Ninja, I’m impressed!

TL;DR: Dr. Thirsti is our favorite Ninja Thirsti flavor so far. Tastes closer to real soda than most zero-sugar options and works great with sparkling water. We’ve tried a few of the Ninja Thirsti flavors, and Dr. Thirsti is easily our favorite. It has much less of that typical “zero sugar” aftertaste than most cola-style drinks, which makes it feel closer to a real soda experience. It mixes well with sparkling water and gives you that soda feel without being overly sweet or artificial-tasting. We’ve actually started making it part of our little movie night routine with popcorn, and it hits the spot. If you’re looking for a cola-style flavor that doesn’t scream “diet drink,” this one’s definitely worth trying. Easy 5 stars for us.

I think it comes out to about 40 cents for a 12 ounce glass of root beer which is cheaper than a bottle of root beer well that's without even factoring in the carbonization However it's delicious and zero Cal. Their fruit flavors are awesome as well.