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Sports Research Youtheory Ashwagandha KSM-66, 60 Vegetarian Capsules bottle
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Sports Research Youtheory Ashwagandha KSM-66, 60 Vegetarian Capsules Review

Youtheory Ashwagandha is designed to help combat stress. It utilizes KSM-66, a clinically-supported, full-spectrum Ashwagandha extract, to help reduce stress and maintain a normal cortisol level.

Product Focus: Thyroid HealthAlso graded for:Stress and CalmMuscle and StrengthAdrenal SupportAlso covers:Hormones
Tier ⓘ
Members
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
Members
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
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Biohacker Mentions
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Cost per month
$15
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Study, Trial or Testing Result Summary

MembersHuman studies

Ashwagandha is present at a dose, including 600 milligrams of root extract, the amount used in the studies. The evidence for thyroid is and . …

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Review Totals and Summary

Members11,240 reviews
11,240 reviews · IHerb 5,298 · Amazon 4,673 · Samsclub 689 · Walmart 253 · Costco 239 · Thrive Market 88

Youtheory Ashwagandha KSM-66, 60 Vegetarian Capsules has generated a volume of user feedback across multiple platforms, and the vast of reviews are quite , with customers expressing with the product’s and overall quality. Consumers frequently highlight in stress levels and mood, with noting a noticeable sense of calm or anxiety after consistent use. …

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Biohacker Summary

MembersWhat our biohacker panel says

of the panel leans on ashwagandha: four it, one uses it, and the rest are . People take it mainly to the stress hormone cortisol, to feel stressed and anxious, to sleep , and for performance, with a also citing testosterone and mood. …

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RAL Summary

MembersThe tier and why

Ashwagandha at the studied dose thyroid measures in one placebo-controlled trial of adults with mildly underactive thyroid, which a review of 186 people on, and customer ratings are . However, a pooled analysis of 1706 adults found little thyroid , so the support is .

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Endocrine system. Combine with and possible side are for members.

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Supplement Facts

Full Spectrum Ashwagandha Blend 1000 mg · Organic Ashwagandha extract 600 mg · Organic Ashwagandha powder 400 mg
Supplement Facts
Serving Size 2 capsules
Servings Per Container 30
Amount Per Serving% Daily Value
Full Spectrum Ashwagandha Blend1,000 mg†
Organic Ashwagandha (root) extract (KSM-66®)600 mg†
Organic Ashwagandha (root) powder400 mg†
Ginger (root) extract (Gingever)20 mg†
† Daily Value not established.

Directions: (Adults) Take two (2) capsules per day with water.

Label source: Amazon · Report a label change

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Our articles on this subject

Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.