Frequently Asked Questions
About HtoEAU® Hydrogen-Infused Water
What is HtoEAU® Hydrogen-Infused Water?
HtoEAU® Hydrogen Water is pure water infused with hydrogen gas using a controlled pressure-based infusion system, ensuring stability and at least 5mg/L pure molecular hydrogen in every can. No tablets, flavours, additives, or stimulants.
HtoEAU® Hydrogen Water is pure water infused with hydrogen gas using a controlled pressure-based infusion system, ensuring stability and at least 5mg/L pure molecular hydrogen in every can. No tablets, flavours, additives, or stimulants.
Is HtoEAU® safe to drink?
Yes. HtoEAU® Hydrogen Water was used in a 4-week randomized, double-blind, placebo-controlled clinical study with no adverse effects reported.
Molecular hydrogen (H₂) is one of the smallest and simplest molecules in nature — the same gas used safely in medical breath tests for decades. Because it's so small, it moves easily through the body, and research suggests it may help reduce oxidative stress by selectively targeting harmful free radicals. Any hydrogen the body doesn't use is simply exhaled through normal breathing, leaving nothing behind.
Yes. HtoEAU® Hydrogen Water was used in a 4-week randomized, double-blind, placebo-controlled clinical study with no adverse effects reported.
Molecular hydrogen (H₂) is one of the smallest and simplest molecules in nature — the same gas used safely in medical breath tests for decades. Because it's so small, it moves easily through the body, and research suggests it may help reduce oxidative stress by selectively targeting harmful free radicals. Any hydrogen the body doesn't use is simply exhaled through normal breathing, leaving nothing behind.
Who is HtoEAU® for?
Athletes, high performers, bio-hackers, and anyone who values science-backed hydration and optimised wellbeing. For those who want a readily available, stable 5mg/L infusion of hydrogen, and don't want to wait!
Athletes, high performers, bio-hackers, and anyone who values science-backed hydration and optimised wellbeing. For those who want a readily available, stable 5mg/L infusion of hydrogen, and don't want to wait!
Why HtoEAU® and not other forms of Hydrogen Water?
Unlike hydrogen tablets — which rely on added compounds like magnesium to generate hydrogen and can produce inconsistent, unstable concentrations — or generator bottles, which require time to produce hydrogen and are prone to unreliable output as electrodes degrade, our products deliver a stable, pre-dissolved hydrogen concentration from the moment it's sealed, with nothing added. We build for serious standards.
Unlike hydrogen tablets — which rely on added compounds like magnesium to generate hydrogen and can produce inconsistent, unstable concentrations — or generator bottles, which require time to produce hydrogen and are prone to unreliable output as electrodes degrade, our products deliver a stable, pre-dissolved hydrogen concentration from the moment it's sealed, with nothing added. We build for serious standards.
Performance & Benefits
What benefits were shown in the clinical study?
The study showed significant improvements in maximal running speed, anaerobic threshold performance, mental health scores, and general health scores after 4 weeks of daily use.
The study showed significant improvements in maximal running speed, anaerobic threshold performance, mental health scores, and general health scores after 4 weeks of daily use.
How long does it take to notice a difference?
In our four-week clinical study, participants experienced measurable benefits with daily consumption. Individual results can vary — while our research measured outcomes over four weeks, some customers report noticing a difference much sooner.
In our four-week clinical study, participants experienced measurable benefits with daily consumption. Individual results can vary — while our research measured outcomes over four weeks, some customers report noticing a difference much sooner.
Can I drink HtoEAU® every day?
Yes. It is designed for daily use and contains no stimulants or additives.
Yes. It is designed for daily use and contains no stimulants or additives.
Hydrogen Stability & Quality
How do you keep the hydrogen stable?
HtoEAU uses pressure infusion and micro-bubble technology to maintain hydrogen potency. Each batch is lab-tested at fill time.
HtoEAU uses pressure infusion and micro-bubble technology to maintain hydrogen potency. Each batch is lab-tested at fill time.
Does the hydrogen escape from the can after opening?
Hydrogen levels stay stable after opening, but for peak potency it is recommended to drink within an hour.
Hydrogen levels stay stable after opening, but for peak potency it is recommended to drink within an hour.
What is the hydrogen concentration?
Each can is precision-infused with 5mg/L dissolved molecular hydrogen during filling. HtoEAU® is engineered to maximise hydrogen retention from filling to sip.
Each can is precision-infused with 5mg/L dissolved molecular hydrogen during filling. HtoEAU® is engineered to maximise hydrogen retention from filling to sip.
Does heat affect hydrogen levels?
Yes. Heat speeds hydrogen escape, so HtoEAU® should be stored chilled or in a cool place.
Yes. Heat speeds hydrogen escape, so HtoEAU® should be stored chilled or in a cool place.
Water Quality
Is HtoEAU® free from contaminants?
Yes. Routine laboratory testing is done for microbiology, heavy metals, water purity, and hydrogen concentration.
Yes. Routine laboratory testing is done for microbiology, heavy metals, water purity, and hydrogen concentration.
Where does your water come from?
All HtoEAU® products begin with the purest, naturally alkaline water, sourced from the 800,000-year-old Eyjafjallajökull Glacier in Iceland. With a naturally occurring pH of 8.3, this water is shaped by years of filtration through volcanic rock, giving it its own natural mineral character. It's the perfect foundation for our products — the fusion of glacial water and hydrogen infusion, bridging nature and technology.
All HtoEAU® products begin with the purest, naturally alkaline water, sourced from the 800,000-year-old Eyjafjallajökull Glacier in Iceland. With a naturally occurring pH of 8.3, this water is shaped by years of filtration through volcanic rock, giving it its own natural mineral character. It's the perfect foundation for our products — the fusion of glacial water and hydrogen infusion, bridging nature and technology.
Taste, Usage & Storage
What do HtoEAU® waters taste like?
Clean, light, pure, neutral, and with no after-taste.
Clean, light, pure, neutral, and with no after-taste.
How should I store HtoEAU®?
Keep it chilled or in a cool, dry place. Avoid direct sunlight or heat exposure. Do not freeze.
Keep it chilled or in a cool, dry place. Avoid direct sunlight or heat exposure. Do not freeze.
How many cans can I drink per day?
Most users drink 1–2 cans daily, matching the 660 mL used in the clinical study.
Most users drink 1–2 cans daily, matching the 660 mL used in the clinical study.
Purchasing & Delivery
Do you ship internationally?
Yes. Available regions are shown at checkout and may vary by country.
Yes. Available regions are shown at checkout and may vary by country.
Is shipping free?
Shipping is complimentary within Europe and the UK.
Shipping is complimentary within Europe and the UK.
How long does delivery take?
Most orders ship within 1–3 business days.
Most orders ship within 1–3 business days.
Can I return my order?
Yes. The money-back guarantee applies to the first order within 14 days of delivery, excluding bulk wholesale.
Yes. The money-back guarantee applies to the first order within 14 days of delivery, excluding bulk wholesale.
Do you offer subscriptions?
Yes. Subscriptions save 10% with flexible 8- or 12-week deliveries.
Yes. Subscriptions save 10% with flexible 8- or 12-week deliveries.
Science & Research
Was the clinical study independent?
Yes. It was conducted by Professor Sergej Ostojic as an independent investigator.
Yes. It was conducted by Professor Sergej Ostojic as an independent investigator.
Where can I read the full study?
The full research report can be downloaded from the Science page.
The full research report can be downloaded from the Science page.
Did the study show hydration benefits?
The study measured performance outcomes and health-related quality-of-life markers, not hydration biomarkers as a primary endpoint.
The study measured performance outcomes and health-related quality-of-life markers, not hydration biomarkers as a primary endpoint.
Do you plan more studies?
Yes. Scientific collaboration and research expansion are part of our mission.
Yes. Scientific collaboration and research expansion are part of our mission.