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. It is pure water infused with H₂, a natural molecule the gut already produces.
Yes. HtoEAU® Hydrogen Water was used in a 4-week randomized, double-blind, placebo-controlled clinical study with no adverse effects reported. It is pure water infused with H₂, a natural molecule the gut already produces.
Who is HtoEAU® for?
Athletes, high performers, bio-hackers, and anyone who values science-backed hydration and optimized wellbeing.
Athletes, high performers, bio-hackers, and anyone who values science-backed hydration and optimized wellbeing.
Who is HtoEAU® designed for?
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?
Benefits were measured after four weeks of daily consumption. Individual experiences may vary.
Benefits were measured after four weeks of daily consumption. Individual experiences may vary.
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?
HtoEAU delivers 5+ mg/L hydrogen at fill.
HtoEAU delivers 5+ mg/L hydrogen at fill.
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 & Filtering
Where is HtoEAU® produced?
All HtoEAU® products are produced in-house by The Hydrogen Innovation Company in the Netherlands.
All HtoEAU® products are produced in-house by The Hydrogen Innovation Company in the Netherlands.
What filtration steps do you use?
The production system uses multi-stage filtration including sediment and carbon filtration, pressure vessel purification, stainless-steel infusion, optional UV treatment, closed-loop processing, and lab-tested outputs.
The production system uses multi-stage filtration including sediment and carbon filtration, pressure vessel purification, stainless-steel infusion, optional UV treatment, closed-loop processing, and lab-tested outputs.
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.
Is your water mineralized or demineralized?
The formulation uses purified water treated through a controlled filtration system.
The formulation uses purified water treated through a controlled filtration system.
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 HtoEAU’s mission.
Yes. Scientific collaboration and research expansion are part of HtoEAU’s mission.