A Protein DrinkThat Doesn'tTaste Like One.

8g of protein. Real fruit juice. Light carbonation. The most refreshing protein drink you've ever cracked open.

Shop Now

Protein, Upgraded.Three flavors. Zero guilt. All fridge-worthy.

Sparkling SeltzerPowered by Protein

Simple Ingredients.No Extra Clicks.

clearly labelled, see exactly what's in every can.

Mango Peach

12 fl oz · 355 ml

Ingredients

Carbonated Filtered Water, Mango Puree Concentrate, Whey Protein Isolate, Apple Juice Concentrate, Peach Juice Concentrate, Lemon Juice Concentrate.

Mango Peach

What's Inside Matters

No long ingredient lists. Nothing you can't pronounce. Carbonated water. Clear whey protein isolate. Real fruit juice.

Protein
8g
Calories
90
Sugar (natural)
11g
Caffeine
0mg
Allergens
Contains milk (whey)
Fizztein strawberry kiwi can

Made for More ThanThe Gym

Post-workout. Afternoon slump. Saturday with friends. Whenever you need something refreshing with the benefit of protein, Fizztein fits in whenever you need it.

OUR STORY
Friends enjoying Fizztein together
Friends enjoying Fizztein together

Questions?We've Got Answers.

No fine print, no runaround. Just straight answers about what's in the can and why it's different.

Fizztein is a clean-label protein seltzer designed for everyday refreshment, not just post-workout recovery, making it an alternative to traditional protein shakes and better-for-you sparkling beverages.

A sparkling, refreshing seltzer with real protein built in. No heavy shake texture, no chalky aftertaste. Just light carbonation, real fruit flavor, and 8g of clean protein in every can.

We're launching with a core lineup of three fruit-forward flavors, with more on the way as we grow.

Most protein drinks lean on a long list of gums, stabilizers, and artificial sweeteners to hold everything together and mask the taste of the protein itself. Fizztein doesn't. No gums, no citric acid, no stevia, no added sugar, no artificial ingredients. Just whey protein isolate, real fruit juice, and light carbonation. If it's not doing something for the drink, it's not in the can.

Nope. Fizztein is shelf-stable, so it's perfectly fine stored at room temperature. That said, it's BEST ENJOYED COLD, so we'd recommend popping it in the fridge (or grabbing a bag of ice) before you crack one open!

view all FAQ

Not Just Seltzer.Protein Seltzer