• Hydration you can feel.

    Taste you'll crave.

    Scientifically & medically developed to help you hydrate better, recover faster, and keep your routine on track. Millions of cans sold since 2014.

    Shop O2

    5,000+ 5-star reviews

    60-day guarantee

    No artificial junk

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  • Sport Variety Pack

    ✓ 6 cans of both flavors
    ✓ Includes Blackberry Currant and Lemon Lime

    Add to cart $35.99 
  • Water Variety Pack

    ✓ 6 cans of both flavors
    ✓ Includes Tropical Pineapple and Strawberry Lemonade

    Sold Out 
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Your Satisfaction is 100% Guaranteed.

If you're not completely satisfied with O2, we offer a 60 Day Money-Back Guarantee.

Why We Create Drinks Without Compromise

Our founder breaks down the dirty secrets in the beverage industry and what we’re doing about them.

Drinks Without Compromise

F.A.Q.

What’s the difference between O2 Sport and O2 Water?

O2 Sport: High Impact Hydration for training days — built for workouts and recovery with high electrolytes, 1g of sugar, and no artificial ingredients.

O2 Water: Deliciously enhanced electrolyte water for all-day hydration — light, crushable, and easy to sip anytime with zero sugar and no BS.

Is O2 carbonated?

Nope.

What's the catch with subscriptions?

There is no catch. You can pause, skip, change flavors/delivery frequency, or cancel any time. No strings attached.

How does the money-back guarantee work?

If you’re not satisfied with your purchase from drinko2.com (or an authorized U.S. retailer), email us at support@drinko2.com and we’ll make it right. Our 60-day money-back guarantee is available to original end-user purchasers in the United States, and requests must be submitted within 60 days of the original purchase date. Refunds cover the product purchase price only—shipping costs aren’t included.

Why is it called O2?

Some of our flavors (O2 Sport and O2 Water) include solubilized oxygen as part of our formulation approach, based on research suggesting ingested oxygen can take a different pathway than inhaled oxygen—via the GI-to-liver (portal) circulation. It’s designed to complement our electrolyte profile and help the body process toxins and recover faster.