Herbal supplement ashwagandha tested for athlete recovery
NCT ID NCT07041853
First seen Jun 26, 2026 · Last updated Jun 26, 2026
Summary
This study tested whether taking ashwagandha (KSM-66) daily for 42 days helps athletes recover from training and improve muscle strength. 56 rugby and water polo players took either 600 mg of ashwagandha or a placebo. Researchers measured stress hormones, muscle soreness, and performance tests like grip strength and jumps.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- ashwagandha (KSM-66) root extract
- What this could lead to
- If it works, this could point toward a natural supplement to help athletes recover faster and improve muscle strength.
- What could go wrong
- This is a small, completed trial in healthy athletes, so results may not apply to the general public. Supplements can have side effects, and benefits may be modest.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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56 people
The number who actually took part.
- Started
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Jun 2025
- Finished
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Aug 2025
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Above the age of 18 * Healthy and free of disease * Assigned as an athlete at CN Poble Nou sports academy Exclusion Criteria: * Allergies to nightshades such as tomato, aubergine, potatoes and peppers * Active supplementation with other ergogenic aids (to not interfere with existing treatment) * Medication or contraceptives (to not interfere with existing treatment) * Liver conditions (to not interfere with existing treatment) * Thyroid conditions (to not interfere with existing treatment) * Diabetes or certain autoimmune conditions (to not interfere with existing treatment) * Active pregnancy (to not interfere with existing treatment) * No signing of the consent form
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Club Natació Poble Nou
Barcelona, Spain
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