Could rebreathing CO2 zap long COVID brain fog? new trial aims to find out
NCT ID NCT06928506
First seen Nov 01, 2025 · Last updated May 15, 2026 · Updated 26 times
Summary
This study is testing a device called Hi-OxSR that lets people briefly rebreathe carbon dioxide (CO2) to see if it can reduce brain fog and fatigue caused by Long COVID. The researchers believe CO2 may calm the immune system and reduce inflammation. About 120 adults with lingering COVID symptoms will use the device at home for 14 days, and their thinking speed and memory will be measured with online tests.
Disclaimer
Read more
Show less
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.
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.
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for LONG COVID are added.
By submitting, you agree to our Terms of use
Contacts and locations
Show contact details
Enter your email to view the contact information for this study.
By submitting, you agree to our Terms of use
Study contacts
-
Contact
Phone: •••-•••-•••• Email: •••••@•••••
Locations
-
Centre Hospitalier Universitaire de Sherbrooke
NOT_YET_RECRUITINGSherbrooke, Quebec, Canada
Contact Email: •••••@•••••
-
Kaye Edmonton Clinic
NOT_YET_RECRUITINGEdmonton, Alberta, Canada
Contact Email: •••••@•••••
-
University Health Network
RECRUITINGToronto, Ontario, M5G 2C4, Canada
Contact Phone: •••-•••-•••• Email: •••••@•••••
Conditions
Explore the condition pages connected to this study.