The same molecule, two delivery routes.
Molecular hydrogen (H₂) is the smallest molecule in the universe. It enters the bloodstream through any tissue surface it contacts. The two consumer delivery methods — drinking hydrogen-rich water and inhaling hydrogen gas through a nasal cannula — deliver the same molecule via different absorption routes.
How hydrogen water works.
A hydrogen water generator dissolves H₂ into drinking water using PEM electrolysis. The dissolved concentration is measured in parts per million (ppm) — typical generators reach 1–7 ppm at the point of generation. The hydrogen is absorbed through the digestive tract. Practical concentration is limited by how much hydrogen will stay dissolved in water before escaping to the air.
How hydrogen inhalation works.
An inhaler delivers hydrogen gas through a nasal cannula at a controlled flow rate. The gas is absorbed through the lungs into the bloodstream. Inhalation supports far higher circulating concentrations of H₂ than water, sustained for the length of the session (typically 20–60 minutes).
Key differences.
| Hydrogen Water | Hydrogen Inhaler | |
|---|---|---|
| Delivery route | Digestive tract | Respiratory / bloodstream |
| Typical concentration | 1–7 ppm dissolved | 2–4% inhaled gas |
| Session format | Drink a glass of H₂ water | 20–60 min inhalation session |
| Portability | High (bottles available) | Low–medium (machine required) |
| Cost of entry | Low | Medium–high |
| Output per session | Limited by water volume | Continuous while machine runs |
| Built-in water filtration | Only on RO-based systems (HERO Purity 200-110) | Not applicable |
If the water itself is the priority.
Both routes above assume your source water is already handled. If it isn't — and you'd rather solve filtration and hydrogen in one appliance — the HERO Purity 200-110 runs a 3-stage PP/CTO/RO filtration train ahead of a PEM cell, producing filtered hydrogen-rich water up to 2,500 ppb. It does not do inhalation, so it's a water-only choice rather than an alternative to an inhaler. See the RO systems hub for the full water side of the range.
Which suits which routine.
Casual daily use, integrated into existing hydration habits — hydrogen water. A dedicated wellness protocol with a fixed daily sitting session — an inhaler. There is no rule against using both.
Can you combine both?
Yes — and there is a single machine designed to do exactly that. The HERO Dual 20 combination unit produces hydrogen-rich drinking water and supports nasal-cannula inhalation from the same PEM stack. For a deeper side-by-side, see our inhalation vs water guide and the full machine comparison.