Learn
There is no official recommendation. In studies of healthy adults, participants drank about 1.5 to 2 litres of hydrogen water a day, or two servings, for two to six weeks. That shows what researchers have tested, not what you need. More important than the amount is that the water is fresh when you drink it.
The studies
Three randomised, placebo-controlled studies in adults without a diagnosis. They measured different blood markers, and the results cannot be combined into advice. What they share is the set-up: a couple of glasses or litres a day, for a few weeks.
Reading the studies
The studies are small and short. They describe how much hydrogen water was tested, not how much is needed for any particular purpose. The hydrogen level in the water also differs between studies, often more than the volume. So a litre of hydrogen water is not a fixed dose.
At normal pressure, water holds about 1.6 mg of hydrogen per litre. Figures above that require pressure in a closed container. When a study states more, such as 12 mg per serving, the figure describes how much hydrogen is generated, for example by a tablet, not how much stays dissolved in the water.
In the studies, participants drink the water shortly after it is made. The same litre left open for two hours holds far less hydrogen.
No authority has set a recommended amount of hydrogen water, and the research is not enough for health promises.
What the studies actually measured is covered in Is hydrogen water a scam? and on our page about molecular hydrogen research.
Freshness
The hydrogen level is highest right after it is made and then drops. Drink it within an hour if you can, or keep it cold in a well-sealed container.
That is when the level is highest. Do not wait until it reaches room temperature.
Fill them almost to the top, screw on the cap and put them in the fridge. Glass or aluminium holds hydrogen better than thin plastic.
If you drink a lot during the day, two smaller batches are better than one large jug left open.
At home
An example: in the morning you run a batch in Lita Aqua, which makes 2.4 litres of fresh hydrogen water in 20 minutes. You drink a glass straight away, fill a bottle to take with you and put the rest in the fridge. In the afternoon you make another batch if you want more. That way you know how fresh the water is, and you need no tablets.
If you would rather inhale hydrogen in a longer session than drink it, the Lita Air hydrogen inhaler is the alternative. The differences are in hydrogen inhalation vs hydrogen water, and tablets are covered in our guide to hydrogen tablets.
Questions and answers
There is no official recommendation. In studies of healthy adults, participants drank about 1.5 to 2 litres a day, or two servings, for two to six weeks. That shows what researchers have tested, not what you need.
There is no established best time. What matters is that the water is fresh, so drink it when you have just made it. One way is to have a glass in the morning and spread the rest across the day.
Hydrogen water is water, so the same applies as for ordinary water: drink according to thirst and need. If you make it with tablets, keep track of how much magnesium you take in. If you have a condition that affects your fluid intake, follow your doctor's advice.
Hydrogen leaves the water in the fridge too, but more slowly in a cold, well-sealed container. Drink it within an hour of making it if you can, and otherwise the same day. Fill the bottle almost to the top so there is little air above the water.
Most do it as a simple daily routine and because they are curious about the research on molecular hydrogen. The research is promising but not enough to promise any health effect, so think of it as water with added hydrogen.
Yes. Hydrogen water is ordinary drinking water with dissolved hydrogen and counts just like any other water.
Next step
Free shipping within Sweden, an invoice with your order confirmation and a 30-day return right. Prefer to try it in Stockholm first? Join the list for a guided trial session.
