H2Tab

H2Tab makes one thing: tablets that turn still water into hydrogen-rich water. Each tablet is built around elemental magnesium, combined with three fruit acids: malic acid from apples, tartaric acid from grapes and adipic acid from sugar beets. In water those acids break the magnesium down, and that reaction releases hydrogen gas as very small bubbles.

The practical side matters more than the chemistry. Drop one tablet into 350 to 500 ml of still, room-temperature water and give it about 90 to 120 seconds. The water clouds while the reaction runs, then clears again. Drink it soon after, because hydrogen is a gas and leaves the glass over time. Ice-cold water slows the reaction, and hot water holds less gas. Do not screw a bottle shut while a tablet is still fizzing.

What one tablet actually gives you

H2Tab states up to 12 ppm of dissolved hydrogen per tablet, which is at the higher end for this format. Each tablet also delivers 80 mg of elemental magnesium, and you swallow that with the water. Magnesium contributes to the reduction of tiredness and fatigue. If you already use a daily magnesium supplement, add the two together rather than treating the tablet as free.

Now the honest part. There is no approved European health claim for molecular hydrogen itself, so we do not make one. Research on hydrogen-rich water exists and is growing, but it is early, and most of it is small. What we can say without stretching anything is what the magnesium in the tablet does, and what the format does: it gives you hydrogen-rich water without a machine, a bottle or a plug socket. People who use it daily tend to do so around training or in the morning; it contains no caffeine and no sugar.

Choosing between the versions

The range is simple. Unflavoured suits anyone who wants to keep the taste of their water, or who stirs the tablet into another still drink. Raspberry and lemon-lime are lightly sweetened with blackberry leaf extract, which adds no calories. The bath tablets are a separate product with a separate purpose and are not for drinking. If you like the format itself, our wider range of effervescent tablets covers other nutrients in the same drop-and-dissolve style.

Why we carry H2Tab

We looked at this category and chose the tablet route over hydrogen machines, because the dose is consistent and you can check what is in it. Within tablets, we prefer a short, readable ingredient list: elemental magnesium plus fruit acids, no dyes, no artificial additives. We stock the unflavoured version deliberately, since it is the one people ask for when they mix it into something else. We do not repeat the brand's benefit language, because the claims behind it are not approved here. What we do check is the label, the compliance file and the batch, in-house and through independent labs. If that reasoning interests you, read how we select brands and products.

H2Tab suits you if you want an easy daily ritual and are comfortable with an ingredient whose long-term evidence is still being built. It suits you less if you want a supplement with a firm, approved benefit behind it. In that case a targeted product from our recovery and hydration range is the more solid starting point.