Frequently Asked Questions
About HtoEAU® Hydrogen-Infused Water
What is HtoEAU® Hydrogen-Infused Water?
HtoEAU® Hydrogen Water is engineered with only the purest water infused with hydrogen gas, using our unique controlled, pressure-based infusion system – ensuring stability and at least 5mg/l pure molecular hydrogen in every can.
No tablets, flavours, additives, or stimulants. No compromise!
Is HtoEAU® safe to drink?
Completely! HtoEAU® Hydrogen Water was used in a 4-week randomized, double-blind, placebo-controlled clinical study, where participants experienced no adverse effects – proving its exceptional safety profile, alongside key health benefits.
HtoEAU is just pure water infused with H₂ – a natural molecule your gut already produces every day.Your body excretes it effortlessly with zero buildup or side effects, backed by decades of studies.
Think of it as water, but upgraded for your wellbeing!
Who is HtoEAU® for?
HtoEAU® is designed for athletes, high performers, bio-hackers, and anyone who values science-backed hydration and optimised wellbeing.
Performance & Benefits
What benefits were shown in the clinical study?
The study demonstrated significant improvements in:
- Maximal running speed (vmax)
- Anaerobic threshold performance (vANT)
- Mental health scores
- General health scores
All measured after 4 weeks of daily use.
How long does it take to notice a difference?
In the study, benefits were measured after four weeks of daily consumption. Individual experiences may vary, but many consumers report feeling a difference as soon as they started experiencing HtoEAU.
Can I drink HtoEAU® every day?
Yes, HtoEAU is designed for your daily wellness ritual – its 4-week clinical study was built on everyday use, delivering consistent H₂ benefits with zero stimulants or additives. Make it your smart swap for average water and unlock oxidative defense from the first sip.
Hydrogen Stability & Quality
How do you keep the hydrogen stable?
Powered by our cutting-edge pressure infusion and micro-bubble technology, we lock in maximum hydrogen potency, that stays stable even after opening – proven by direct stability measurements. Every single batch? Lab-tested at fill time for unrivalled quality and hydrogen power.
Does the hydrogen escape from the can after opening?
Hydrogen levels stay stable after opening (tested!) – but for peak potency enjoy your HtoEAU within an hour – unlocking the maximum wellness benefits!
What is the hydrogen concentration?
HtoEAU delivers a market-leading 5+ mg/L hydrogen at fill, far exceeding the 1.6 ppm ‘therapeutic threshold’. That’s a market-leading potency that outshines the rest! We focus on high retention, consistency and quality.
Does heat affect hydrogen levels?
Yes, heat speeds hydrogen escape, but cold storage locks in potency until you sip. Keep HtoEAU chilled for best stability.
Water Quality & Filtering
Where is HtoEAU® produced?
All HtoEAU® products are produced in-house by The Hydrogen Innovation Company (THIC) in the Netherlands.
What filtration steps do you use?
Our production system uses a multi-stage filtration process, including:
- Sediment and carbon filtration
- Pressure vessel purification
- Stainless-steel infusion system
- Optional UV treatment
- Closed-loop processing
- Laboratory-tested outputs
This ensures product purity, consistency, and compliance with European standards
Is HtoEAU® free from contaminants?
Yes. We run routine laboratory testing for:
- Microbiology • Heavy metals
- Water purity
- Hydrogen concentration
All results comply with safety standards.
Is your water mineralized or demineralized?
Our formulation is based on purified water treated through a controlled filtration system to ensure stability and safety.
Taste, Usage & Storage
What do HtoEAU® waters taste like?
Our waters taste clean, light and pure – completely neutral and with no after-taste.
How should I store HtoEAU®?
Heat speeds hydrogen escape, but cold storage locks in potency until you sip.
Keep HtoEAU chilled or store the cans in a cool, dry place. Avoid direct sunlight or heat exposure.
Do not freeze.
How many cans can I drink per day?
Most users enjoy 1–2 cans daily, matching the 660 mL used in our clinical study. It’s safe to drink as much as you like – there’s no upper limit, just endless hydration benefits!
Purchasing & Delivery
Do you ship internationally?
Yes, your region will be shown at checkout. Availability may vary per country.
Is shipping free?
Enjoy complimentary shipping on all orders within Europe and the UK – no minimums, straight to your door. Fast, tracked delivery for fresh HtoEAU every time!
How long does delivery take?
Delivery times vary by region. Most orders ship within 1–3 business days.
Can I return my order?
Love HtoEAU or your money back – no hassle!
Applies to your first order within 14 days of delivery. Excludes bulk wholesale.
See full terms at checkout.
Do you offer subscriptions?
Subscribe and save 10% on HtoEAU – flexible 8 or 12 week deliveries. Pause anytime, cancel easily.
Keep HtoEAU seamlessly flowing to your door and maintain your best daily routine!
Science & Research
Was the clinical study independent?
Yes. The study was conducted by Professor Sergej Ostojic (MD, PhD) as an independent investigator.
Where can I read the full study?
You can download the full research report on our Science page.
Did the study show hydration benefits?
The study measured performance outcomes and health-related quality-of-life markers. It did not measure hydration biomarkers as a primary endpoint.
Do you plan more studies?
Yes. Scientific collaboration and research expansion are core parts of our mission.