Hydrogen water or hydrogen-rich water (also called hydrogen-enriched water or H2 water) simply means normal water (H2O) that contains dissolved molecular hydrogen (H2).

A water molecule has two hydrogen atoms, chemically bound to the oxygen atom. This is different from the hydrogen gas molecule (H2), which is two hydrogen atoms bound only to each other and available for therapeutic benefit. 

Everything contains hydrogen. It is both the most abundant and smallest element in the universe. However hydrogen is typically bound to other atoms or molecules and not available as H2. Unless water is H2 enriched we don’t get H2 nor do we get O2 from H20 because they are chemically bound to the water molecule. In order for H2 to have therapeutic benefits it must be dissolved into its molecular form.  

Yes, there are over 1,000 peer reviewed medical studies that have tested the efficacy of hydrogen rich water on a number of health issues, diseases and athletic performance. In many cases the results are quite remarkable. To date there have been no significant negative medical or health side effects reported by any of these studies. We encourage you to do your own research. You can review a number of medical studies in the Science section. 

The first account of the potential benefits of hydrogen water dates back to 1798 when it was discussed by the English scientist and doctor Thomas Beddoes. Beddoes speculated about the possible health benefits of hydrogen gas in his writings on therapeutic gases. However, it was not until much later that scientific research substantiated these early hypotheses with rigorous studies. 

H2 water has been demonstrated to have positive effects on health issues such as sleep disorders, low energy levels, joint pain, arthritis, digestion, inflammation, diabetes, kidney and liver function and a host of other disorders. The primary impact of drinking H2 water is its antioxidant and anti-inflammatory properties that allow it to treat a host of human health issues.  

Hydrogen water is often called the "miracle molecule" because of the unique properties of molecular hydrogen (H₂)—the smallest and lightest molecule in the universe. This exceptional characteristic allows it to penetrate human tissue within seconds, reaching areas that other supplements and antioxidants cannot. 

Hydrogen water has gained recognition for its potential antioxidant and anti-inflammatory effects. Studies (over 1,000 peer-reviewed articles) suggest benefits for digestion, joint health, metabolism, sleep, and athletic performance. Regular water does not contain free molecular hydrogen, so it cannot deliver those documented H₂-related benefits. 

Studies suggest potential antioxidant and anti-inflammatory properties. These may support better sleep, digestion, joint health, and athletic recovery. Consistent consumption of hydrogen-rich water is often recommended for the best results. Read more in the Science section. 

Yes. Our bodies actually generate hydrogen during the digestion process. Some of this natural H2 production has been hampered in recent years due to contaminants and pollutants in our food supply such as herbicides and pesticides as well as micro plastics entering the water supply. Secondly our bodies are in fact composed of a high degree of hydrogen. 63% of the atoms in our bodies are hydrogen atoms and 10% of our body mass is hydrogen. 

Many of us will begin to feel some modest improvement with better sleep, well-being and even digestion within 14 days. Individual results depends upon personal circumstances, intake consistency, and the concentration levels of the H2 water that is being consumed. So to begin to feel substantial  benefits of hydrogen-rich water for improved athletic performance, recovery, and better sleep, the duration can vary, but most studies using regular therapeutic levels of H2 water, suggest that noticeable improvements can be seen within a few weeks of consistent use.  

The typical recommended amount is about 1 liter of therapeutic H2 water per day, though this can vary based on individual needs and specific levels of H2 concentration. 

It may be beneficial to start with a lower amount (e.g., 500 ml to 1 liter) and gradually increase to the recommended daily intake. This allows the body to adjust and helps monitor any potential side effects. 

Yes, hydrogen-rich water is considered safe for consumption even at several hundred times the concentrations produced by hydrogen water bottles.  

Molecular hydrogen (H₂) is a naturally occurring, non-toxic gas. When dissolved in water, it does not form any harmful compounds and is safe to drink. The human body is naturally exposed to small amounts of hydrogen produced by gut bacteria, indicating its inherent safety. 

In Japan, hydrogen-rich water has been recognized for its therapeutic benefits and approved by The Ministry of Health for specific medical uses, which further underscores its safety profile.

At extremely high concentrations H2 gas can be explosive. However our bottles produce H2 at a maximum 6 ppm (parts per million). In order for H2 water to be combustible we would need H2 concentrations at 40,000 ppm. So in other words our bottles produce H2 at 0.015% of the combustible level. 

Generally no. It is nearly impossible to overload water with hydrogen. Once water is H2 saturated, any excess dissipates. If you drink high concentrations of H2 water without a gradual increase in consumption some people have experienced short-term diarrhea and head-ache but those symptoms typically disappear within 1 or 2 days. 

Yes. The primary effect of hydrogen-rich water is to assist with the maintenance of a suitable oxidation level for good health. It has no contraindications but it is always advisable to consult with your healthcare professional. 

It is best to use filtered or bottled natural water. Tap water is not recommended simply because we cannot evaluate what additives, such as chlorine, have been included in urban water systems. 

It's advisable to consult with a healthcare provider before starting any new health regimen, especially for individuals with underlying health conditions or those on medication. 

The stability of hydrogen-rich water and how long it maintains elevated hydrogen concentrations can vary significantly based on the type of container and whether it is open or closed. So it is generally recommended to consume your H2 water within 5 minutes of production.  

The production of hydrogen-rich water using hydrogen generator bottles can be influenced by several environmental factors, including atmospheric pressure, altitude above sea level, and outside temperature. See a detailed explanation of these impacts. 

Ion Membrane electrolysis is considered a next-generation approach that often delivers more consistent hydrogen concentrations. Unlike older SPE/PEM systems, the Ion Membrane design featured in H2Ultra water bottles can enhance both the purity and stability of H₂ infusion. By optimizing conductivity and reducing scaling issues, Ion Membrane technology helps maintain reliable performance over repeated use. This can lead to higher and more stable ppm levels of hydrogen in each cycle, a feature that benefits users looking for strong antioxidant potential in every glass. It also prolongs the lifespan of the product and its efficiency.