Frequently Asked Questions
About HtoEAU® Hydrogen-Infused Water
What is HtoEAU® Hydrogen-Infused Water?
HtoEAU® is purified water infused with molecular hydrogen using our controlled, pressurebased infusion system. It contains only water and hydrogen — no sugar, flavors, additives, or stimulants.
Is HtoEAU® safe to drink?
Yes. HtoEAU® was used in a 4-week randomized, double-blind, placebo-controlled clinical study, and no adverse effects were reported.
Who is HtoEAU® for?
HtoEAU® is designed for athletes, high performers, and anyone who values science-backed hydration and 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.
Can I drink HtoEAU® every day?
Yes. Daily use was the basis of the clinical study, and the product contains no sugar, stimulants, or additives.
Hydrogen Stability & Quality
How does HtoEAU® keep hydrogen stable?
We use pressure-based infusion and micro-bubble retention technology to help maintain hydrogen concentration. Every batch is tested for quality and hydrogen levels at the time of filling.
Does the hydrogen escape from the can after opening?
Hydrogen begins to dissipate immediately after opening. For best results, drink the can shortly after opening.
What is the hydrogen concentration?
Each can is infused and tested for a target hydrogen concentration at the time of filling. We focus on high retention, consistency, and quality.
Does heat affect hydrogen levels?
Yes, exposure to high heat can accelerate hydrogen loss. Store in a cool, dry place 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 drinking water treated through a controlled filtration system to ensure stability and safety.
Taste, Usage & Storage
What does HtoEAU® taste like?
It tastes like clean, pure water — smooth and neutral. There are no added flavors.
How should I store HtoEAU®?
Store the cans upright, in a cool, dry place. Avoid direct sunlight or heat exposure.
Can I chill or refrigerate the cans?
Yes, chilling is recommended as many users prefer it cold. Avoid freezing.
How many cans can I drink per day?
Most users consume 1–2 cans daily. In the clinical study, participants consumed 660 mL per day.
Purchasing & Delivery
Do you ship internationally?
Yes, your region will be shown at checkout. Availability may vary per country.
Is shipping free?
Yes. HtoEAU® ships without additional shipping costs.
How long does delivery take?
Delivery times vary by region. Most orders ship within 1–3 business days.
What is the Sample Kit?
The Sample HtoEAU KIT contains 3 cans of the same hydrogen water used in the clinical trial. It’s a simple way to try HtoEAU® before purchasing a full pack.
Can I return my order?
Unopened packs can be returned according to our return policy. Contact our support team for assistance.
Subscriptions & Accounts
Do you offer subscriptions?
Subscriptions ensure you never run out of HtoEAU® and may offer extra convenience. Availability depends on your region.
Can I manage my account online?
Yes. You can change your details, address, and subscription in your account portal.
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.