Research profile: Echo Hydrogen Prebiotic Stick Packs
Disclosure: Echo Water makes this product and funds Hydrogen Studies. The studies below were run by other researchers; we list them by a fixed rule so the count can be checked.
Of 136 human studies of drinking hydrogen water, 37 report the concentration they used, and 22 of those used 1.6 ppm or less, the most hydrogen an open glass of water holds at normal air pressure (H2 Analytics measured more than that for the Echo Hydrogen Prebiotic Stick Packs, but in a sealed lab vial). Of those 22, 14 improved their main outcome, 1 found no clear effect, 6 had mixed results and 1 did not report a direction. 99 studies did not report a concentration and are not counted.
None of these studies tested an Echo product. They studied hydrogen water at or below the level an open glass of water can hold. None of them was funded by Echo. 16 of 22 state their funding.
How this count is made
Human studies in the Hydrogen Studies database in which people drank hydrogen water, and the paper reports a hydrogen concentration at or below 1.6 mg/L. That is the most hydrogen an open glass of water holds at normal air pressure. H2 Analytics measured 16.15 mg/L for the Echo Hydrogen Prebiotic Stick Packs, but in a sealed lab vial, so we use the lower, open-glass figure. Animal and cell studies, inhaled gas, saline and bathing studies are excluded. Studies that do not report a concentration are counted separately, never matched. A study's result is the direction of its primary outcome as recorded from the abstract and reviewed by our reviewer.
The matched studies (22)
This is a summary of published research, not medical advice. Hydrogen water is not a treatment for any disease. How we review studies · How to compare hydrogen devices
Data version 391389b98a-H2AR-250930-1, generated November 11, 2026.