Brain fog after COVID: could a kitchen oil be the answer?

NCT ID NCT05705648

Ongoing Symptom relief Sponsor: University of Alberta Source: ClinicalTrials.gov ↗

First seen Jul 17, 2026 · Last updated Jul 17, 2026

Summary

This trial tests whether a daily dose of medium chain triglyceride oil can ease brain fog in adults aged 22–50 with long COVID. Participants take either the active oil or a placebo (safflower oil) for several weeks and complete computer-based cognitive tests and questionnaires. The study aims to see if the oil improves thinking and memory complaints that persist after a COVID infection.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: medium chain triglyceride oil
What this could lead to: If it works, this could point toward a simple dietary supplement to help clear brain fog in people with long COVID.
What could go wrong: This is a small, early-stage trial with no blinding, so results may be due to placebo effects. The supplement may have no benefit over the control oil.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Confusion long COVID-19 Memory Disorders Mental Fatigue

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

LONG COVID

Contacts and locations

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Locations

University of Alberta

Edmonton, Alberta, T6G 2P4, Canada

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