Hyperbaric oxygen has been used by people with multiple sclerosis in the UK for decades, but controlled research has not shown a consistent clinical benefit. That makes it important to separate long-standing community use from evidence that HBOT changes MS itself.
You may still decide the chamber experience or community model is worth trying. The useful decision is one made without a promise that the treatment will alter disease progression.
Why it was studied
A plausible mechanism led to clinical trials.
Hyperbaric oxygen therapy means breathing concentrated oxygen inside a pressurised chamber. Pressure helps more oxygen dissolve into the bloodstream and reach tissue. That mechanism prompted researchers to test whether HBOT could affect MS symptoms or progression.
Plausibility is not the same as a reliable outcome. Multiple controlled trials were completed, allowing later reviewers to assess the evidence as a whole rather than relying on individual experiences.
What the review found
Nine trials did not produce a consistent benefit.
- Controlled trials
- 9
- Participants
- 504
- Overall conclusion
- No consistent benefit
Included in the Cochrane review.
Across the included trials.
Routine use was not justified.
Some individual outcomes appeared positive, but the pattern was not consistent enough to support routine HBOT for MS. The Undersea and Hyperbaric Medical Society likewise states that controlled evidence of benefit is limited. This is why we do not describe HBOT as a treatment that improves or slows multiple sclerosis.
Evidence at a glance
Longstanding use, but no consistent controlled benefit.
Cochrane review
9 trials504 participants across the included studies.
Evidence conclusion
Not consistentRoutine use was not justified.
Local alternative
Since 1983South Wales MS Therapy Centre in Swansea.
A local option worth knowing about
South Wales has an established MS therapy charity.
The South Wales MS Therapy Centre in Swansea has offered oxygen therapy since 1983. It operates as a charity, has two multiplace chambers and provides treatment at low cost to members. For someone seeking regular, long-term access, that model may be more suitable than paying commercial session prices in Cardiff.
Visit the South Wales MS Therapy Centre ↗If you still want to try HBOT
Define what would make it worthwhile.
Choose a symptom or practical outcome you can track, set a review point and avoid interpreting every good day as proof. A single session can establish whether you tolerate the chamber before making a larger commitment.
Keep established care in place
HBOT does not replace your MS team.
Continue disease-modifying treatment, rehabilitation and symptom management as advised. New neurological symptoms or deterioration need appropriate medical assessment, not a chamber booking.
A choice with the evidence visible
Trying it remains your decision. Our job is not to oversell it.
You can book a single Cardiff session with no referral needed, or explore the Swansea charity for lower-cost ongoing access. Either route should begin with realistic expectations.