Simple supplement and rehab program shows promise for Post-COVID recovery
NCT ID NCT07544186
First seen Apr 26, 2026 · Last updated Jun 23, 2026 · Updated 12 times
Summary
This study tested whether a combination of L-citrulline supplements, nutritional therapy, and pulmonary rehabilitation could help recovered COVID-19 patients improve their blood vessel health, body composition, and physical function. 43 adults aged 40-80 who had recovered from COVID-19 took part. The intervention group received daily L-citrulline and nutritional guidance for 3 months, while both groups underwent pulmonary rehab. The goal was to see if this non-drug approach could ease lingering post-COVID issues.
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This is a summary of
the original study
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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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Contacts and locations
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Locations
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Instituto Nacional de Enfermedades Respiratorias
Mexico City, Mexico
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
Active substance
L-citrulline (a dietary supplement) combined with nutritional therapy and pulmonary rehabilitation
What this could lead to
If successful, this approach could offer a simple, non-drug way to help people recover from lingering COVID-19 symptoms like fatigue and poor physical function.
What could go wrong
This is a small, completed study with only 43 participants, so results may not apply to everyone. The supplement and rehab may not produce clear benefits over standard care.
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.