Hydrogen Tablets vs. a Hydrogen Water Machine: What You're Actually Drinking

Publié le 19 October 2026

Cutaway cross-section illustration of a single water droplet rendered in blue and platinum silver tones on a white background

You drop a hydrogen tablet into a glass, watch it bubble, and drink. Simple enough. But what is actually in that glass once the bubbling stops?

Most of the answer comes down to chemistry, and the chemistry is public. Eric, a self-described holistic athlete who researches every wellness tool before he buys it, ran into the same question early on. "At first I kind of didn’t believe the whole hydrogen thing because there’s so much misconception and a lot of people trying to profit off of it," he said in his story, and he described a market crowded with tablets, bottles and machines all competing for attention.

This guide follows the path Eric and David each took. Look at what each format physically produces. Look at how the published research says hydrogen-rich water gets made. Then look at what independent labs found in the water from a separate-chamber machine. By the end you will know exactly what you are drinking from each, and why the machine side of the comparison is the one with certificates you can look up.

What a Hydrogen Tablet Is, Chemically

A hydrogen tablet is a small solid built to react with water. Most are built around magnesium. When the tablet meets water, the metal reacts and hydrogen gas comes off as bubbles. Those bubbles are the whole point of the product, and they are also the first clue that the hydrogen is being made inside the glass you are about to drink from.

The reaction in the glass

Researchers who work with magnesium-based hydrogen water write the reaction as Mg + 2H₂O → Mg(OH)₂ + H₂. Nakao et al. (2010), reporting in the Journal of Clinical Biochemistry and Nutrition, used exactly that equation to describe how a metallic magnesium stick placed in drinking water produces hydrogen-rich water. Two things come out of that reaction, and only one of them is hydrogen.

How magnesium hydrogen water was made in the studies

Two human studies, Nakao et al. (2010) and Kang et al. (2011) in Medical Gas Research, each made their hydrogen-rich water by placing a metallic magnesium stick into drinking water, and each reported a final hydrogen concentration of 0.55 to 0.65 mM (about 1.1 to 1.3 mg/L by our conversion). Xiao and Miwa (2016), writing in Human Cell, prepared theirs with a magnesium stick in 600 mL of double-distilled water overnight and measured about 1,460 µg/L of dissolved hydrogen, compared with roughly 1,600 µg/L for saturated hydrogen.

Take those numbers for what they are. Hydrogen barely dissolves in water, so every method that produces hydrogen-rich water is working toward the same low ceiling of roughly 1.6 ppm. The useful question is not how high a method can go. It is what comes along for the ride — and whether the glass is the same every time you pour it.

What Else Ends Up in the Glass

Go back to the equation. For every molecule of hydrogen gas a magnesium-based tablet releases, the reaction also forms magnesium hydroxide. That is a mineral compound, it is a product of the reaction, and the reaction happens in the glass. Whatever else a given tablet contains is listed on its own label and varies from one tablet to the next.

So the plain description of tablet water is water, dissolved hydrogen, and the leftovers of the chemistry that made the hydrogen. Nothing about that is hidden. It is simply what a tablet does.

It also explains why researchers who study hydrogen-rich water describe their preparation so carefully. Nakao, Kang and Xiao each reported the stick, the volume of water and the resulting concentration, because those details define what participants actually drank. In this field the method is part of the experiment, and the same logic applies to anything you pour into your own glass every day.

Why the leftovers matter for a daily habit

David’s question was never whether hydrogen water exists. It was what, exactly, he was putting in his glass. "I wanted to know exactly what was in my water—and what wasn’t," he said, and that is the question that sent him from the research into the engineering of the machine he eventually chose. A once-in-a-while glass is one thing. A glass every morning for years is a different thing, which is why the contents of the water deserve a straight answer.

How a Hydrogen Water Machine Makes the Water

A hydrogen water machine makes hydrogen by electrolysis: electricity splits water into hydrogen and oxygen at the electrodes, and the hydrogen is then dissolved into your drinking water. The design detail that matters most is where that splitting happens. In a separate-chamber (dual-chamber) system, the electrolysis takes place in its own chamber, and the hydrogen is delivered across a multi-layer, fiber-containing membrane into the water you drink.

Eric singled out exactly this feature in his story. Among everything he examined, the separate-chamber design, which keeps the drinking water from ever contacting the electrodes, was one of the engineering details that set the machine apart from the crowd of tablets and bottles. Our full walkthrough of the mechanics lives in how hydrogen water machines work.

Separate chambers, in plain terms

David put it in his own words: some machines electrolyze the drinking water itself and can introduce unwanted byproducts, while a separate-chamber design keeps the drinking water isolated from the electrolysis process entirely. "That engineering distinction mattered to me," he said. We wrote a whole article on the topic, separate-chamber vs. single-chamber electrolysis, because it is the single design choice that decides what shares the glass with the hydrogen.

Output with a certificate behind it

Gas output is a number you can verify. The Lourdes Hydrofix is marketed at approximately 120 mL/min, depending on usage conditions, and Masa International Corp., a third-party testing lab, measured approximately 134.2 mL/min under test conditions (Test No. MM03-6024-01). Every unit is also tested for hydrogen concentration before it leaves the factory and ships with its own certificate of authenticity.

What Independent Labs Found in the Water

This is where a machine and a tablet part ways most visibly. A machine can be sent to an accredited lab and the water can be tested. Japan Food Research Laboratories (JFRL), an independent testing lab, tested water from the Lourdes Hydrofix under Certificate No. 23028707001-0201. Selected plasticizers, BPA, iron, and titanium were not detected under test conditions, and the water stayed pH neutral, within ±0.1 of the original water.

The electrodes behind the numbers

The electrodes are high-purity titanium and platinum. The titanium is TP270C (a public Japanese Industrial Standard grade) with 99.928% purity, documented by an independent metallurgical certificate, No. 17-MANS-0078-B. Every certificate number in this article is one you can look up on our certifications page. That is not an accident. It is the editorial standard we set when we decided to publish everything.

David did his own version of verification. As a researcher by temperament, he bought a hydrogen meter and checked the output himself, then checked again three years later and reported the same reading. For laboratory work the gold standard for measuring dissolved hydrogen is gas chromatography; for a kitchen counter, a dissolved hydrogen meter is the practical tool, and it is the one David used.

Reading a label versus reading a certificate

Three questions work on any hydrogen water product, ours included. Is the lab named? Is there a certificate number? Can you read the original document? A claim that passes all three can be checked by anyone, in a few minutes, from their own kitchen table. A claim that passes none of them is a claim you are being asked to take on faith. We built the Lourdes Hydrofix record around the first kind, which is why the lab names and certificate numbers above are written out in full instead of hidden behind a badge.

Concentration and Purity, Side by Side

Concentration matters. Purity matters at least as much. Published trials of hydrogen-rich water report both what was dissolved and how the water was made, and a professional-strength machine is defined by delivering both: adequate dissolved hydrogen to match the research protocols, and a purity profile that has been tested rather than assumed. The Lourdes Hydrofix is designed to deliver up to approximately 1.6 ppm under normal conditions, and the purity record above is the other half of the picture. For the longer version, see hydrogen water machine purity.

The scale of the literature explains why people care about the details. Ichihara et al. (2015), in a comprehensive review of 321 original articles published from 2007 to June 2015, reported that hydrogen water was mostly given ad libitum, meaning as an ordinary drinking water. Johnsen et al. (2023) reviewed 81 clinical trials and 64 scientific publications on human studies, drawn from a field with more than 2,000 publications, and described the available administration methods along with hydrogen’s low solubility as a challenge for delivery. Low solubility is exactly why how the water is made, and how fresh it is when you drink it, carry so much weight.

Glass After Glass: Why Consistency Matters

A tablet is one reaction in one glass. A machine is built to make the water on demand, so the tenth glass of the week is made the same way as the first. That difference sounds small on paper and becomes obvious in a routine. It also changes how the purchase works: a tablet is bought again for every serving, while a machine is a single equipment purchase that makes water for every glass after it. The Lourdes Hydrofix Premium Edition is $2,599.90 (or about $234.66 a month with Shop Pay).

Many hydrogen water drinkers aim for about 2 liters a day, often two big glasses first thing in the morning before eating. That is a common habit among users, not a medical recommendation. Eric’s version is an evening one: about a liter of hydrogen-rich water each night, a ritual his story describes as simple, quiet and easy to maintain.

Fill it, run it, drink it

The routine with a machine is as short as it sounds. Fill the pitcher with cold water, run the cycle, pour a glass. Most people drink within a few minutes of pouring. That is the whole routine, and it is the reason a countertop machine tends to become a habit rather than a project.

The pitcher itself is BPA- and BHPF-free and made in Japan, so the glass you pour comes out of a design that was specified with drinking water in mind from the start. Cold water in, hydrogen-rich water out. Nothing else needs your attention.

What Owners Say After the Novelty Wears Off

The test of any hydrogen water setup is month three, not week one. David is now three years in. "The machine does exactly what it says it does, and three years in, it’s still performing at the same level," he said. Eric is two months in and has already reached a clear view: "I truly believe in the quality of the Holy Hydrogen machine." His advice to anyone shopping is straightforward. Do the research, look at the engineering, and do not settle for lesser machines in a crowded market.

Both stories share a thread worth noticing. Neither Eric nor David came to the machine through a dramatic claim. They came through documents, specifications and testing, which is what an engineering-first purchase looks like.

David’s own history shows how far that instinct goes. He had spent fifteen years working through wellness tools of every kind, from ketogenic nutrition to infrared saunas to qigong, and he still bought a hydrogen meter to check the machine against its own description. Eric did the same kind of homework from a different direction, starting with a YouTube channel whose expertise and transparency stood out to him and working inward to the specifications. Different routes, same destination: a machine whose claims could be examined.

Where the Lourdes Hydrofix Fits

Given these engineering criteria (a water path that stays separate from the electrolysis, independent test certificates, and a routine that stays simple), here is how the Lourdes Hydrofix Premium Edition lines up. It uses separate-chamber (dual-chamber) electrolysis with a Multi-Layer Fibriform Polymer Membrane (MFPM), high-purity TP270C titanium and platinum electrodes, JFRL purity testing under Certificate No. 23028707001-0201, and third-party output testing under Test No. MM03-6024-01. It is made in Japan, carries PSE and UL certifications, and comes with a one-year full warranty.

You can find the Lourdes Hydrofix in our best hydrogen water machine collection.

We use the phrase professional-strength for a specific reason. It describes a machine with adequate dissolved hydrogen to match the research protocols, a purity profile that has been independently tested, individual factory testing of every unit, and separate-chamber electrolysis. Each of those items points to a document or a lab result, not an adjective, and that is what makes the phrase defensible.

So what are you actually drinking? From a magnesium-based tablet, it is water, hydrogen and the product of the reaction that made the hydrogen. From a Lourdes Hydrofix, it is water and hydrogen, made in a separate chamber, with test results behind it. If you are also weighing hydrogen water bottles, our hydrogen water bottle vs. machine comparison reaches the same conclusion by a different route, and what is hydrogen water covers the basics from the beginning.

Frequently Asked Questions

Is a hydrogen tablet the same as hydrogen water from a machine?

The gas is the same molecule. How it gets into the water is not. A magnesium-based tablet makes hydrogen through a reaction in the glass, and the reaction forms magnesium hydroxide alongside the hydrogen. A separate-chamber machine makes hydrogen by electrolysis in its own chamber and keeps the drinking water out of that process.

What is left in the glass after a magnesium-based tablet dissolves?

According to the reaction reported by Nakao et al. (2010), magnesium plus water yields magnesium hydroxide plus hydrogen. Any other ingredients depend on the specific tablet and appear on its label.

How much hydrogen water do people usually drink in a day?

Many users aim for about 2 liters a day, often as two big glasses first thing in the morning before eating. It is a common habit rather than medical advice.

Are the Lourdes Hydrofix test certificates public?

Yes. JFRL Certificate No. 23028707001-0201, Masa International Test No. MM03-6024-01 and metallurgical Certificate No. 17-MANS-0078-B are all listed on our certifications page, and each Lourdes Hydrofix ships with its own certificate of authenticity.

Where is the Lourdes Hydrofix made and certified?

It is made in Japan, in ISO 9001 and ISO 14001 certified factories, and it carries PSE certification for Japanese electrical safety and UL certification for American safety standards.

References

Nakao A, Toyoda Y, Sharma P, Evans M, Guthrie N. (2010). Journal of Clinical Biochemistry and Nutrition, 46(2), 140-149. PMID: 20216947. DOI: 10.3164/jcbn.09-100.
Kang KM, Kang YN, Choi IB, Gu Y, Kawamura T, Toyoda Y, Nakao A. (2011). Medical Gas Research, 1(1), 11. PMID: 22146004. DOI: 10.1186/2045-9912-1-11.
Xiao L, Miwa N. (2016). Human Cell, 30(2), 72-87. PMID: 27804028. DOI: 10.1007/s13577-016-0150-x.
Ichihara M, Sobue S, Ito M, Ito M, Hirayama M, Ohno K. (2015). Medical Gas Research, 5, 12. PMID: 26483953. DOI: 10.1186/s13618-015-0035-1.
Johnsen HM, Hiorth M, Klaveness J. (2023). Molecules, 28(23). PMID: 38067515. DOI: 10.3390/molecules28237785.
Dhillon G, Buddhavarapu V, Grewal H, Sharma P, Verma RK, Munjal R, Devadoss R, Kashyap R. (2024). International Journal of Molecular Sciences, 25(2), 973. PMID: 38256045. DOI: 10.3390/ijms25020973.
Li Y, Bing R, Liu M, Shang Z, Huang Y, Zhou K, Bao D, Zhou J. (2024). Frontiers in Nutrition, 11, 1328705. PMID: 38590828. DOI: 10.3389/fnut.2024.1328705.

Holy Hydrogen products, including the Lourdes Hydrofix Premium Edition, are not medical devices and are not intended to diagnose, treat, cure, or prevent any disease. All information on this site is provided for educational and general wellness purposes only and should not be considered medical advice. Always consult a qualified healthcare provider before beginning any new wellness practice, especially if you have a medical condition, are pregnant or nursing, or take prescription medications.

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