Taking a specific ashwagandha supplement called KSM-66 at 300-600mg every day for about 2 months can change how strong you are, how long you can exercise, and your stress hormone levels.

Pro

Against

Evidence from Studies

Supporting (2)

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Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial

Randomized Controlled Trial

Human

2015

Effects of Ashwagandha ( Withania somnifera) standardized root extract on physical endurance and VO 2max in healthy adults performing resistance training: An eight-week, prospective, randomized, double-blind, placebo-controlled study

Randomized Controlled Trial

Human

2023

Contradicting (2)

Community contributions welcome

Untitled Study

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Similar Assertions

Taking ashwagandha supplements (a traditional herb used for stress) every day for about 2 months can lower your body's stress hormone called cortisol in adults.

83%

Taking ashwagandha supplements (300-600mg every day) for about 2 months makes people stronger at bench pressing, according to this claim.

82%

Taking ashwagandha supplements while doing high-intensity interval training doesn't help your fitness any more than just doing the training by itself. That's what this study found when it tested healthy young men doing 8 weeks of workouts.

81%

Taking ashwagandha root extract twice a day (300mg each time) for 8 weeks was completely safe for healthy athletes - they didn't experience any bad side effects during the study.

80%

Taking ashwagandha supplements (an herb used in traditional medicine) every day for about 2 months might help people exercise longer without getting as tired by improving how efficiently their body uses oxygen during physical activity.

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