Hydrogen water is regular water infused with extra molecular hydrogen gas (H₂). It’s produced through electrolysis or by dissolving magnesium-based stick packs, allowing water to retain dissolved hydrogen that may offer antioxidant properties.  

Source:

https://www.sciencedirect.com/science/article/pii/S2405580825000202 

https://echowater.com/blogs/blog/what-is-hydrogen-water 

Emerging research suggests molecular hydrogen may reduce oxidative stress, thereby enhancing athletic recovery, improving cognition, and reducing inflammation, among other benefits. However, results are preliminary and not definitive.

Some users notice benefits within days or weeks, especially for recovery or hydration. Clinical studies often report noticeable effects after 4–8 weeks of regular use.

Source:

https://www.sciencedirect.com/science/article/pii/S2405580825000202 

https://pubmed.ncbi.nlm.nih.gov/38590828/ 

https://echowater.com/blogs/blog/drinking-hydrogen-water-days-14-30

here are over 1500 studies, including more than 200 in humans, examining the effects of molecular hydrogen on oxidative stress, metabolism, recovery, inflammation, and other biological processes. For more information, visit www.hydrogenstudies.com.

Yes, H₂ is part of H₂O. Hydrogen water refers to extra dissolved molecular hydrogen gas (H₂) that is not chemically bound in water molecules.

Source:

https://echowater.com/blogs/blog/what-is-hydrogen-water

Start with one bottle per day and increase gradually. Many people drink it daily for general support.

Source:

https://echowater.com/blogs/blog/what-are-the-side-effects-of-drinking-hydrogen-water

Hydrogen water is generally recognized as safe (GRAS). Very high intake may cause mild digestive effects like bloating or loose stools.

Source: 

https://www.hfpappexternal.fda.gov/scripts/fdcc/index.cfm?set=GRASNotices&id=520 

https://www.eurekaselect.com/article/112356

https://echowater.com/blogs/blog/what-are-the-side-effects-of-drinking-hydrogen-water 

Hydrogen water tastes just like water. It has no added flavor, no aftertaste, and no change in texture. Just clean, refreshing hydration.

No. Hydrogen water contains dissolved H₂ gas and is pH-neutral. Alkaline water is defined by high pH levels and lacks consistent research support.

Use devices or stick packs that generate at least 0.5 PPM of dissolved hydrogen, the threshold shown to be potentially effective in research.

Source:  

https://www.sciencedirect.com/science/article/pii/S2405580825000202 

https://pmc.ncbi.nlm.nih.gov/articles/PMC12035766/ 

https://echowater.com/blogs/blog/why-echo-hydrogen-water-ppm-is-better

Molecular hydrogen has been widely studied and is generally recognized as safe (GRAS). In some individuals, very high intake may cause mild digestive discomfort, such as bloating or loose stools. If you have specific health concerns or sensitivities, consider consulting a healthcare professional to determine what works best for you.

Source:  

https://hfpappexternal.fda.gov/scripts/fdcc/index.cfm?set=GRASNotices&id=520

PPM stands for 'parts per million,' a unit measuring the concentration of hydrogen gas in water. Therapeutic levels typically range from 0.5 to 4.5 PPM.

Source:  

https://www.sciencedirect.com/science/article/pii/S2405580825000202
https://echowater.com/blogs/blog/why-echo-hydrogen-water-ppm-is-better 

The Echo Flask generates up to 6 PPM of dissolved hydrogen from a 10‑minute cycle and up to 8 PPM in a 20‑minute cycle.

Yes. The Flask is certified to produce 8 PPM hydrogen based on third-party testing.

Test Results

Our flask generates molecular hydrogen (H2) fresh each time you run a cycle. The electrolysis process generates H2 directly from the water you put in. There are no cartridges to replace and no added chemicals or minerals are needed.

Only use deionized (DI) or reverse osmosis (RO) water with the flask.

No. The Flask maintains a neutral pH and does not introduce metals into the water.

For best performance and long-term reliability, we recommend using plain water only in the Flask. Adding flavorings, supplements, or powders inside the device can interfere with the electrolysis process and may shorten the life of the unit. If you prefer flavored water or supplements, enjoy them after generating hydrogen water by mixing them in a separate container. Please note that adding ingredients or stirring may reduce the amount of dissolved hydrogen, as hydrogen naturally escapes from water over time. For the highest hydrogen levels, enjoy your hydrogen water soon after it’s made.

No. The Echo Flask must be handwashed only. Avoid dishwashers and submerging the device.