Celsius built its brand around “clean energy” and fitness positioning, but the formula still relies on synthetic caffeine and an artificial sweetener. Shinzo takes a whole-leaf tea approach instead. Here is how the two compare.
At a glance
| Feature | Shinzo | Celsius |
|---|---|---|
| Natural caffeine from whole-leaf matcha | Yes | No |
| Taurine or synthetic energy-blend additives | No | Yes |
| Artificial sweeteners | No | Yes (sucralose) |
| Added synthetic vitamins | No | Yes |
| Sugar source | 9g real cane sugar | 0g, sucralose instead |
| Flavor lineup | 3 flavors | Wide variety |
Based on publicly available product labels and brand materials at the time of writing. Formulas can change.
Why people switch to Shinzo
- Caffeine comes from 3g of ceremonial grade Japanese matcha per can, alongside L-theanine, for calmer, steadier energy instead of a sharp spike.
- Real cane sugar, not artificial sweeteners, across the Shinzo lineup, unlike Celsius’s sucralose.
- No taurine, no guarana extract, and no glucuronolactone layered on top of the caffeine.
- Real ingredients you can picture: water, cane sugar, matcha, coconut water, citric acid, and natural mango flavor.
Frequently asked questions
Does Celsius contain sugar?
No. Celsius Originals are sweetened with sucralose, an artificial sweetener, rather than sugar.
Does Shinzo use artificial sweeteners like Celsius does?
No. Shinzo’s sodas use 9g of real cane sugar per can instead, with no artificial sweeteners.
What is Celsius’s actual caffeine source?
Caffeine is listed as a standalone added ingredient on Celsius labels, alongside guarana seed extract and green tea extract, rather than coming from a single whole-leaf source the way Shinzo’s does.
If you want matcha soda with ceremonial grade tea as the caffeine source, shop Coconut Mango and Yuzu Mint.
Disclaimer: The statements in this blog post have not been evaluated by the Food and Drug Administration. The information provided here is for educational purposes only and should not be considered as medical advice. Consult with a qualified healthcare professional before making any dietary or lifestyle changes. Competitor formulas and labels can change; details here are based on publicly available product information at the time of writing.