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Sports Research KSM-66 Ashwagandha 300 mg Capsules bottle
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Sports Research KSM-66 Ashwagandha 300 mg Capsules Review

KSM-66 Ashwagandha is a branded, full-spectrum extract of Ashwagandha root, designed to support stress relief, mood, and cognitive function. It is often taken as a daily supplement to help the body adapt to physical and mental stressors.

Product Focus: Energy and FatigueAlso covers:HormonesBrain
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Evidence ⓘ
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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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Cost per month
$7
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Study, Trial or Testing Result SummaryMembersHuman studies

This product gives 600 milligrams of ashwagandha root extract a day, which is a dose; studies saw at doses as as 125 milligrams a day. A 2026 review pooling 23 placebo-controlled trials with 1706 adults found ashwagandha the stress hormone cortisol compared with placebo. …

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Review Totals and SummaryMembers1,666 reviews
1,666 reviews · Amazon 1,376 · Transparentlabs 95 · Nootropicsdepot 77 · Naturesbounty 46 · Nowfoods 38 · Marianos 30 · Florahealth 4

Across various online platforms, KSM-66 Ashwagandha 300 mg Capsules have attracted a broad base of reviewers, the of whom report experiences. users describe the supplements as noticeably effective for managing daily stress and their overall sense of -being. …

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Biohacker SummaryMembersWhat our biohacker panel says

People take it mainly to stress hormones, sleep , and handle stress, and also mention hormone support, with some suggesting it at night or late in the day. Two panelists favor standardized, patented extracts such as KSM-66, and doses mentioned include 250 mg a day, 400 to 600 mg, and a wider range of 120 to 1,000 mg for at least 6 weeks. …

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RAL SummaryMembersOur verdict

customer reviews are . …

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More DetailsMembersBody systems · Combine with · Possible side effects

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

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Supplement FactsKSM-66® Ashwagandha Extract 600 mg
Supplement Facts
Serving Size 1 Capsule
Servings Per Container 60
Amount Per Serving% Daily Value
KSM-66® Ashwagandha Extract (Withania somnifera) (root) (min. 5% total withanolides)600 mg†
† Daily Value not established.

Other ingredients: Rice Flour, Hypromellose (HPMC) Capsule, Vegetable Magnesium Stearate, Silica.

Directions: Typically 1-2 capsules (300-600 mg) per day.

Label source: Transparentlabs · Report a label change

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.