Plain-English translation of NCT06721949 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Phase 3 — Testing in thousands of people, comparing the treatment against what doctors currently use. This is the last big step before approval.
This study is testing whether supplementation can help improve thinking and memory problems, as well as fatigue, in people experiencing long COVID. is a natural compound found in the body that plays important roles in muscle function, brain health, and energy production. Researchers believe that low levels may contribute to long COVID symptoms, and that supplementing with could help you feel better.
Many people with long COVID struggle with brain fog and exhaustion, and there are currently very few effective treatments available. Previous research has found that people with long COVID often have low levels of in their blood, which may be connected to their symptoms, so this trial is exploring whether boosting levels could make a real difference.
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If you enroll, you will be randomly assigned to receive either capsules or a placebo (inactive capsule that looks identical) twice daily for 12 weeks. You will take two capsules in the morning and two in the evening. Throughout the study, you will likely have clinic visits or check-ins to monitor how you are doing and whether your symptoms are improving. The research team will assess your thinking, memory, and energy levels before, during, and after treatment.
AI-generated summary from trial data · Jun 9, 2026 · Not medical advice
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