Concussion & Brain Injury
Still Not Feeling Like Yourself After a Concussion?
If headaches, brain fog, dizziness or fatigue have lingered for weeks or months, explore whether Hyperbaric Oxygen Therapy could form part of your approach to brain recovery — personally guided, in our Kildare or Dublin clinic or from your own home.
Does This Sound Familiar?
The Symptoms No One Warned You About
After a concussion, you may have expected rest and time to be enough — yet weeks or months later, symptoms can still be there. If several of these feel familiar, you're not alone, and you're not imagining it.
The Science
How HBOT May Support Brain Recovery
The brain has a high demand for oxygen and energy. Following a concussion or traumatic brain injury, a complex series of changes can occur involving brain metabolism, blood flow, inflammation and cellular function. These processes can differ depending on the type and severity of injury and how much time has passed.
Hyperbaric Oxygen Therapy significantly increases the amount of oxygen dissolved in the blood plasma. Under pressure, this creates a temporary increase in the oxygen available to tissues throughout the body, including the brain. In the context of brain injury, this may support or influence some of the biological processes involved in recovery.
Increases Oxygen Availability
HBOT significantly increases dissolved oxygen in the blood plasma, increasing the oxygen available to brain tissue during treatment.
May Influence Inflammatory Processes
HBOT may influence inflammatory and oxidative processes that can form part of the body's response following brain injury.
May Support Neuroplasticity
Increased oxygen availability under pressure may influence processes involved in neuroplasticity — the brain's ability to adapt, reorganise and form new connections.
May Support Brain Metabolism & Recovery
By temporarily increasing oxygen availability, HBOT may support cellular energy and metabolic processes involved in brain function and recovery.
The Research
What Does the Research Say?
HBOT has been studied in people experiencing persistent symptoms following concussion and traumatic brain injury, including in randomised, double-blind and sham-controlled trials. Some studies have reported improvements in symptoms and cognitive or functional outcomes, while other well-controlled trials have found no significant benefit compared with sham treatment. Differences in injury type, treatment programmes, study populations and control methods continue to make this an active and sometimes debated area of research.
2025 Double-Blind Randomised Trial · 47 Participants
Adults experiencing persistent symptoms following non-stroke brain injury received 40 HBOT sessions or 40 sham sessions over 12 weeks. At 13 weeks, the HBOT group showed a significantly greater improvement in overall neurobehavioural symptoms than the sham group. Improvements were also reported in measures including sleep difficulties, vestibular complaints, anxiety and smell.
Important limitation: The study was relatively small, with 47 participants included in the analysis, and included different forms of non-stroke brain injury rather than concussion alone.
View the Research on PubMed →2025 Systematic Review & Meta-Analysis · 250 TBI Patients
Researchers analysed four studies involving 250 people with neurocognitive impairment following traumatic brain injury. The pooled findings reported improvements across several measured areas, including memory, attention, general cognition, executive function, information-processing speed and motor skills.
Important limitation: The evidence base was small, the included studies varied in design, and the authors concluded that larger trials using standardised HBOT programmes are still needed.
View the Research on PubMed →Randomised Sham-Controlled Trial · 60 Participants
A double-blind trial involving 60 military service members with persistent symptoms following mild traumatic brain injury compared different HBOT oxygen exposures with sham treatment. The primary analysis found no significant benefit from HBOT compared with sham treatment for persistent post-concussion symptoms.
Why this matters: Other sham-controlled military studies have also produced limited or mixed findings, demonstrating that the evidence for HBOT after concussion is not uniformly positive.
View the Research on PubMed →What does this mean for concussion recovery? There are encouraging findings suggesting HBOT may support some people with persistent symptoms following brain injury, but the research is mixed and does not show that everyone will benefit. That's why ReWell approaches HBOT as a potential adjunct to an individual recovery and rehabilitation plan rather than a guaranteed treatment.
Your Guide
A More Individual Approach to Concussion & Brain Recovery
Davitt Meenaghan is the Founder and Director of ReWell and an IBUM-certified Hyperbaric Safety Officer. His wider work is informed by functional medicine, biohacking and longevity, with a particular interest in how individual biology, lifestyle and emerging health technologies such as Hyperbaric Oxygen Therapy can work together to support health and recovery.
That broader perspective is particularly relevant after concussion or brain injury, where recovery can look very different from one person to another. Persistent symptoms may involve headaches, dizziness, brain fog, fatigue, poor sleep, difficulty concentrating, changes in mood or reduced tolerance for everyday activity. Davitt's approach is therefore not to treat concussion as a standard HBOT problem, but to understand the nature of your injury, the symptoms that remain, how long they have persisted and what medical care or rehabilitation you are already receiving.
Davitt can help you understand the HBOT technology itself, the evolving and sometimes mixed research relevant to concussion and traumatic brain injury, hyperbaric safety, chamber and pressure options, and the practicalities of using HBOT in a clinic or at home. HBOT is not presented as a cure or a replacement for medical assessment or concussion rehabilitation. It is explored as one potential supportive therapy within a broader, bioindividual approach to recovery.
IBUM
Certified Safety Officer
100+
Verified Client Reviews
32
Counties Served
The Process
How Your ReWell Programme Works
From first call to first session — here's what to expect, whichever path you choose.
Discovery Call
Tell us about your injury, the symptoms you're experiencing, how long they have persisted and what rehabilitation or medical care you've already received. Davitt will talk through whether HBOT may be appropriate as part of your wider recovery approach and recommend a starting point — clinic, rental or ownership.
Your Personalised Guidance
Based on your circumstances, symptoms and goals, ReWell guides your HBOT programme — including session frequency, pressure and pacing — rather than applying the same approach to every brain injury.
Clinic Visit or Home Delivery
Book your first clinic session in Kildare or Dublin, or — for rentals — we deliver and install your chamber, with a full safety walkthrough so you feel confident from session one.
Ongoing Support
We check in throughout your programme — questions, adjustments, progress — so you're never figuring it out alone. Available by phone and WhatsApp.
Why ReWell
Why People Choose ReWell
There are other places to access HBOT in Ireland. Here's what makes the ReWell experience different.
Personally Guided
Led by Davitt Meenaghan, IBUM-certified Hyperbaric Safety Officer. Your HBOT programme is guided around your circumstances, goals and intended use.
Nationwide Access
Clinic sessions in Kildare or Dublin, home rentals delivered and installed across all 32 counties, and flexible ownership options. Wherever you're based — we come to you.
Ongoing Support
We don't just deliver a chamber and disappear. From your first conversation through to ongoing use, the ReWell team remains available for guidance and support.
Common Questions
Frequently Asked Questions
Can HBOT help with concussion symptoms months or years after the injury?
HBOT has been studied in people with persistent symptoms months or even years after traumatic brain injury. Some studies have reported improvements in symptoms or cognitive function, while other sham-controlled trials have not found a significant HBOT-specific benefit. How long ago the injury occurred is therefore only one factor to consider, and improvement cannot be guaranteed.
What concussion symptoms have been studied in HBOT research?
Research has examined a range of persistent post-concussion symptoms and outcomes, including headaches, dizziness or vestibular complaints, sleep, cognition, memory, attention, mood and overall neurobehavioural symptoms. Results vary between studies and individuals.
How many HBOT sessions are needed after concussion or brain injury?
There is no universally established HBOT programme for persistent concussion symptoms. Research programmes have often used structured courses of multiple sessions, but these research programmes shouldn't automatically be treated as a prescription for every person. ReWell guides frequency, pressure and pacing around individual circumstances and intended use.
Can HBOT be used alongside concussion rehabilitation or physiotherapy?
HBOT may be explored as an adjunct to a wider recovery programme rather than a replacement for medical care or rehabilitation. Depending on your symptoms, that wider programme may involve your GP or specialist as well as physiotherapy, vestibular rehabilitation, occupational therapy or other appropriate care.
Is HBOT safe after concussion or brain injury?
HBOT is generally well tolerated but isn't suitable for everyone. In two randomised trials involving 143 participants and 4,245 chamber sessions for persistent post-concussion symptoms, chamber-related adverse events were uncommon, with minor barotrauma the most frequently reported and no serious chamber-related adverse events reported. Your individual health history and suitability still need to be considered before starting.
Where can I access HBOT for concussion recovery?
ReWell offers guided HBOT sessions at our clinic in Sallins, Co. Kildare or Dublin, as well as home chamber rental with delivery and installation across all 32 counties. Which option is most appropriate depends on your circumstances and intended use.
Conditions & Research
Explore HBOT by Area of Interest
Explore the research behind HBOT and learn how it may support different areas of health, recovery and performance.
What Clients Are Saying
Real experiences from people who have used ReWell for clinic sessions, home HBOT rental and ongoing support.
Not Sure Where to Start?
Ready to Find Out What HBOT Could Do for Your Recovery?
Speak directly with Davitt Meenaghan and we'll help you explore whether HBOT may have a place in your wider recovery approach and which pathway may suit you best — clinic sessions, home rental or chamber ownership. No pressure, no obligation. Just an honest conversation.