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120% more electrolytes than leading sports drinks
O2 optimizes cellular rehydration with a formula modeled on clinical-grade hydration solutions. This can help alleviate muscle cramps, soreness, and fatigue associated with dehydration and high-intensity activity.
DELICIOUS PURE HYDRATION 7X MORE OXYGEN THAN TAP WATER
O2 has no fizzy gas or syrupy sugars - that stuff just slows you down. Power through PRs and recover fast with smooth, non-carbonated hydration that keeps you feeling light and ready for the fight. Our proprietary oxygenation gives O2 an airy, refreshing flavor you won’t find anywhere else.
A NATURAL CAFFEINE SOURCE WHEN YOU NEED IT
O2 offers naturally caffeinated flavors when you need clean caffeine without the crash. Green coffee beans deliver a crisp, fresh feeling of mental alertness with no crash. Don’t need the caffeine? Grab a caffeine-free flavor instead for pure, delicious hydration.
Ingredients you can trust
Calories
Sugar
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Caffeine
Net Carbs
DELICIOUSLY BALANCED WITH ORGANIC SUGAR AND PLANT-BASED FLAVORS (MONK FRUIT EXTRACT, STEVIA EXTRACT, AND ERYTHRITOL)
Frequently Asked Questions
FAQS
How do you oxygenate a drink? Will it leave the liquid when I open it?
It’s a similar process to carbonation. The oxygen will dissipate over time, like sparkling water that goes flat.
Why does O2 taste so good?
We use a plant- and fruit-based mix of erythritol, monk fruit, stevia, and organic sugar to give our O2 flavors their unique flavor profile. No junk or fillers - just 10 clean ingredients you can pronounce.
How are there 14G carbs but only 15 calories?
Most of the carbs come from erythritol, which passes largely undigested through the body (i.e., you pee it out). So it accounts for most of the carbs, but only 2 calories. 14G carbs - 11G erythritol makes the net carb count in O2 closer to 3G.
Isn’t caffeine catabolic after a workout?
O2 caffeine content is not high enough to cause a catabolic state after working out. And, just to note - O2’s Blackberry Currant and Lemon Lime flavors are caffeine free.
What customers are saying
