Could breathing your own CO2 clear long COVID brain fog?
NCT ID NCT06928506
First seen Nov 01, 2025 · Last updated Jun 19, 2026 · Updated 35 times
Summary
This study tests a device called Hi-OxSR that lets people rebreathe small amounts of carbon dioxide to see if it helps with long COVID symptoms like brain fog and fatigue. About 120 adults who have had COVID-19 for at least 3 months will use the device at home and take online thinking and memory tests. The goal is to find the best way to use the device safely and effectively.
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Study contacts
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Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
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Centre Hospitalier Universitaire de Sherbrooke
NOT_YET_RECRUITINGSherbrooke, Quebec, Canada
Contact Email: •••••@•••••
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Kaye Edmonton Clinic
NOT_YET_RECRUITINGEdmonton, Alberta, Canada
Contact Email: •••••@•••••
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University Health Network
RECRUITINGToronto, Ontario, M5G 2C4, Canada
Contact Phone: •••-•••-•••• Email: •••••@•••••
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.