Hydrogen Water Plus Drug Combo Improves Stroke Recovery in Rats
- Authors
- Zhao Jiang, Tharun T Alamuri, Darren L Yang, Tyler Annarino, Eric R Muir, Tim Q Duong
- Journal
- Brain Research
- Year
- 2025
- DOI
- 10.1016/j.brainres.2025.149940
- Study Type
- Rat
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Ischemic Stroke
- Body System
- Nervous System
TL;DR
Hydrogen-enriched water improved stroke recovery in rats, and combining it with minocycline worked even better.
Key Finding
In rats with experimental stroke, hydrogen-enriched water at a dose of 20 mL/kg produced the best neuroprotective effects, and combining it with minocycline significantly improved outcomes compared to hydrogen water alone.
Summary
Researchers tested hydrogen-enriched water (water infused with molecular hydrogen gas) in rats that had experienced a stroke caused by blocked blood flow to the brain. They tested different doses of the hydrogen water, alone and combined with an anti-inflammatory drug called minocycline. The study found that a specific dose of hydrogen water (20 mL per kilogram of body weight) worked best, and when combined with minocycline, it provided even better protection to brain tissue and improved recovery compared to hydrogen water alone.
Practical Takeaway
This is early-stage research in animals only, not humans. While the results suggest hydrogen water may have potential as a stroke treatment when combined with other therapies, much more research—including human clinical trials—would be needed before any health claims could be made. The findings do not yet indicate what dose or delivery method would be appropriate or effective in people.
Abstract
Background: Ischemic stroke remains a leading cause of death and disability worldwide, with limited effective treatments due to the complexity of its pathophysiology. Molecular hydrogen (H2) and minocycline (M), both possessing anti-inflammatory and antioxidant properties, have shown individual neuroprotective potential in preclinical models. However, the optimal therapeutic dosing of H2, particularly in combination with other agents, remains undefined. Objective: This study aimed to (1) determine the dose-response relationship of hydrogen-enriched water in a rat model of transient middle cerebral artery occlusion (MCAO), and (2) evaluate whether optimized H2 dosing combined with minocycline provides superior neuroprotection compared to H2 monotherapy. Methods: Sixty-six male and female Sprague-Dawley rats underwent 60-minute MCAO followed by treatment with varying doses (5-30 mL/kg) of hydrogen-enriched water (3.2 ppm), alone or in combination with minocycline (20 mg/kg). Treatments were administered post-reperfusion as well as on days 1 and 2. Behavioral outcomes (Garcia score) and infarct volumes (TTC staining) were assessed at 7 days post-stroke. Results: The optimal H2 dose was 20 mL/kg, which produced the highest Garcia scores and lowest infarct volumes. A dose-dependent effect was observed with a quadratic fit (R2 = 0.751 for Garcia scores; R2 = 0.289 for lesion volume). Combination therapy with H2 and minocycline significantly outperformed H2 monotherapy in both neurological recovery and infarct reduction, with no sex differences observed. Conclusion: Hydrogen-enriched water shows a dose-dependent neuroprotective effect in experimental ischemic stroke, with 20 mL/kg identified as the optimal dose. Combined therapy with minocycline further enhances outcomes, supporting the potential of dual-agent strategies for improved stroke treatment. These findings provide a foundation for translational development of H2-based combination therapies in clinical settings.