Is sparkling water extra hydrating?

Carbonation doesn’t affect how you retain fluid, but it may influence how satisfied you feel after drinking.

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August 12, 2025 9:04am EDT

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Sparkling vs still water: What's more hydrating?

Hi there,

Sparkling water feels refreshing — but does it hydrate like still water? It’s a common question, especially for those who prefer their water with a little fizz.

Here’s what the research shows:

Sparkling and still water hydrate the body equally. What matters most is what’s in the drink — especially electrolytes like sodium and potassium.
Carbonation can satiate thirst more quickly. In one study, people drank 25% less water after having sparkling water first — because they felt satisfied faster.
Temperature plays a role too. Cold beverages, whether still or sparkling, tend to reduce thirst more effectively than room-temperature drinks.
Perception matters. Carbonation creates a biting, cooling sensation in the mouth, which may explain why fizzy drinks often feel more thirst-quenching — even if they’re not more hydrating.

Bottom line: Go with your preference. Still and sparkling water are equally hydrating. Carbonation doesn’t impact fluid absorption or retention, but it can change the experience of drinking — and how satisfied you feel. That’s part of why we created LMNT Sparkling: so people have more options to stay hydrated across a broad spectrum of occasions.

Read today’s article for a closer look at the science behind bubbles, thirst, and hydration.

Stay Salty,
Robb and the LMNT Team

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Is sparkling water extra hydrating?

Carbonation doesn’t affect how you retain fluid, but it may influence how satisfied you feel after drinking.

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