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.

We highly recommend using filtered, distilled, or reverse osmosis (RO) water for optimal performance and a clearer understanding of what you’re consuming. While tap water can be used, it contains unknown chemicals and minerals that may shorten the flask’s life. Increased buildup could also require more frequent cleaning. Read more about it here

No. The Flask maintains a neutral pH and does not introduce metals into the water. We’ve taken every precaution to ensure safety. All of our products undergo third party testing, which you can review at any time.

For added peace of mind, we’ve also completed a dedicated PFAS report on our Echo Flask, available here.

Do not add any supplements directly into your Flask - Use 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.

You can view our Flask Digital Manual here

The Flask™ contains a small amount of distilled water to keep the membrane primed, because a hydrated membrane matters - efficient hydrogen production, consistent bubble formation, optimal performance from the start, and membrane protection. Your Flask™ is clean and ready to use. Simply discard the water, rinse, and fill it with purified or distilled water for best performance.

If your Flask arrived without water, or if it hasn’t been used for a while and has dried out, no worries —that is completely okay! It simply means the electrode membrane may need a little rehydration before use.

Hold and Release the Pressure for ~3 seconds. Twist off the cap by gripping the sides of the lid, pressing downward on the sides (not on the pressure release, this is after you've already released the pressure) and twist counterclockwise, applying gentle force, similar to opening a pill bottle. Read more about the lid here

Small drips from the oxygen port are normal. This is not considered a leak—it’s an occasional and expected result of oxygen being expelled through the port (even beyond the first use). This is one of the features on our PEM membrane that sets us apart from others - It prevents oxygen or contaminants from flowing back into the water.

Small drips can range from a quarter-sized spot to the size of the flask base. Read more here to Understand your Flask™ Generator

Your Echo Flask™ is designed to automatically, and safely manage internal pressure during and after each hydrogen cycle. Because of this, you may hear different sounds — or none at all. Whether you hear it or not, sound variations do not affect hydrogen concentration (PPM).

Your Echo Flask™ is designed to run 5–7 cycles of 10 minutes or 3–4 cycles of 20 minutes per full charge.  

Your Flask will indicate when the battery is low, but letting it fully deplete before charging helps maintain proper battery calibration — allow the Flask™ to run until it can no longer complete a full cycle. 

Why? Your Flask uses a lithium-ion battery paired with battery management software. When the battery is new, the system’s percentage readings may not yet be perfectly calibrated. This is known as a battery calibration period. Read more about it here 

Your Echo Flask™ is designed to be very simple to take care of - weekly, we recommend a quick rinse and occasional wash with mild soap—similar to any reusable water bottle. The built-in “Clean” cycle also does most of the work for you, so there’s nothing complicated.

As for deeper cleaning, we only recommend about once a month and simply involves soaking it in a water + vinegar mix—no special tools or products needed.

Read more about Cleaning & Maintenance Of Your Echo Flask™