Category guide
Caffeinated sparkling water: a buyer's guide
A newer shelf category with a simple promise: bubbles, caffeine, and not much else. Here's how to read the label.
6 min read
Caffeinated sparkling water sits between two familiar shelves: the seltzer cooler and the energy aisle. It borrows the format of one and the function of the other — carbonated water with caffeine added, usually without sugar and usually with a very short ingredient list.
How it compares
- vs. plain seltzer: same carbonated base, plus caffeine. Flavor is typically light rather than syrupy.
- vs. soda: generally no sugar and no caramel color, and far fewer ingredients.
- vs. energy drinks: energy formulas often stack synthetic caffeine with taurine, B-vitamin blends and sweeteners. Caffeinated sparkling waters usually keep the formula minimal.
- vs. coffee: a can is cold, portable and fixed-dose; a brewed cup varies widely in strength and doesn't travel as well.
What to check before you buy
- Caffeine per can, and its source. Most cans in this category land between 75mg and 200mg. Plant-sourced caffeine is usually named on the label.
- Sugar and calories. Zero-sugar is the category norm; if a product has sugar, it's closer to soda.
- Ingredient count. Fewer ingredients generally means fewer sweeteners and acids.
- Added functional ingredients. L-theanine, electrolytes and adaptogens are common additions — decide which you actually want.
- Real flavor vs. artificial. Check whether flavor comes from natural sources.
When it makes sense
It fits the moments where coffee is too heavy and seltzer does too little: the mid-afternoon stretch, a gym bag, a long drive, a bar order without alcohol, or a desk where you want something cold and carbonated that still does something.
Where Cómo No lands
Cómo No is a zero-sugar, zero-calorie caffeinated sparkling water made with six ingredients: 100mg of naturally sourced caffeine (80mg green tea, 20mg guaraná) and 100mg L-theanine per can, in Mango Chile, Pineapple Tamarind and Prickly Pear y Lime.
You can order 12-packs online or find a stockist near you.