Molecular hydrogen: What It Is, Uses, Evidence & Safety

At a glance

Purpose, evidence and practical considerations.

How it works & important distinctions

Regulatory status: OTC dietary supplement / functional beverage (US, DSHEA); food or food supplement (EU, Japan). Not a prescription drug. Not WADA-prohibited. The form is the delivery vessel and the generation method, not a new molecule

Different forms

The evidence on this page does not automatically apply to:

Inhaled H₂ gas (2–4% v/v)
H₂-rich saline IV
lactulose (colonic bacterial H₂)
“alkaline water” sold without a measured H₂ number

Products & variants

Reviewed branded products and distinct forms related to Molecular hydrogen. A listing is not an endorsement.

H2Tab

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