Top 10 Best ashwagandha ksm66 in 2026

Last Updated - 6/22/2026

🏆Best Choice

Nature's Bounty

Nature's Bounty Stress Relief Ashwagandha KSM 66 Tablets, Mood Support, 50 Count

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•PLANT-BASED STRESS RELIEF: Unlike some other stress supplements Nature’s Bounty Stress Relief tablets use plant-based ingredients to support a calm state of mind and help you manage occasional stress (1)
•SUPPORT FROM ASHWAGANDHA: Nature’s Bounty Stress Relief tablets contain 600 mg Ashwagandha KSM-66 per serving; Ashwagandha KSM-66 is a clinically studied herbal extract that supports a healthy response to occasional stress (1)
•WITH L-THIANINE: Each serving of Nature’s Bounty Stress Relief contains 200mg of the amino acid L-Theanine to support the mood centers of the brain and promote a calm and relaxed mental state (1)
•QUALITY IS OUR PRIORITY: Nature’s Bounty is committed to the safety of our supplements; Our Stress Relief tablets are non-GMO; gluten free; sugar free; and contain no artificial color; flavor; or sweetener
•FROM THE TRUSTED WELLNESS EXPERTS: Nature’s Bounty Anxiety & Stress Relief tablets are a product of nearly 50 years of dedication to quality; consistency; and scientific research to make vitamins and nutritional supplements of excellence

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$9.24

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Nutricost

Nutricost KSM-66 Ashwagandha Root Extract 600mg, 60 Veggie Caps - 5% Withanolides - with BioPerine - Full-Spectrum Root Extract

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•600mg of KSM-66 Ashwagandha Root Extract Per Serving (60 Servings)
•60 Veggie Caps Per Bottle
•5% Withanolides (30mg Per Cap)
•BioPerine For Improved Absorption
•Non-GMO, Gluten Free, Made in a NSF Certified, GMP Compliant, FDA Registered Facility

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$14.95

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Double Wood Supplements

Double Wood Supplements Ashwagandha KSM 66 Organic and Clinically Studied Extract (600mg Per Serving, 120 Capsules, 60 Servings) Adaptogen Cortisol Manager for Women and Men

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•ENHANCED 20:1 ASHWAGANDHA EXTRACT STRENGTH EXTRACT: Double Wood provides 500mg of a 20:1 Ashwagandha extract (Withania somnifera plant) per serving
•HERBAL ADAPTOGEN SUPPLEMENT: Ashwagandha supplements are recognized as adaptogenic herbs traditionally used to support the body’s natural response to occasional stressors
•SUPPORTS A SENSE OF CALM : One study on 58 individuals showed that those who took at least 250 mg of Ashwagandha extract for 8 weeks had helped the body adapt to occasional daily pressures
•ROOTED IN QUALITY: Manufactured and Tested in the USA from Globally Sourced Ingredients. Double Wood's ashwagandha ksm 66 supplement is manufactured and tested for safety right here in the USA from Globally Sourced Ingredients, are non-gmo, gluten free, and organic
•WE BOTTLE WELLNESS: At Double Wood we provide pure, potent supplements that deliver exceptional value, all backed by careful sourcing and rigorous third-party testing. Please reach out to us to see any of our Ashwagandha test results

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$14.95

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Physician's CHOICE

Physician's CHOICE KSM-66 Ashwagandha Root Powder Extract 1,000mg - Organic - with Black Pepper for Maximum Absorption - 5% Withanolides - Stress, Mood & Athletic Support - 60 Vegan Capsules

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Why Clinically Proven KSM?: Organic KSM-66 ashwagandha root extract is the most researched ashwagandha with 22 Rigorous double-blind clinical studies showing its effectiveness in supporting relaxation support, stress support, athletic support. Packaging May Vary!
•5% Standardized Withanolide Content: Withanolides are the active components responsible for the effects associated with ashwagandha. Too high Withanolide content can be unpleasant, and too little can have no influence. KSM-66 is standardized at 5% to ensure that you get the same reliable dose each time.
•Stress Support: A published study showed that KSM-66 supports stress. Each Ashwagandha serving comes with 1000 mg of vegan organic KSM-66 ashwagandha - One Month Supply
•KSM Wellbeing: Support your overall wellbeing with KSM-66. Our Calming formula is designed to help support you adapt with what life throws your way
•Sports Nutrition, Energy & Athletic Support KSM-66 is the most effective form of ashwagandha for athletes who train and compete at peak levels. KSM supports energy and assists muscle recovery

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$29.97

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TRIBE ORGANICS

TRIBE ORGANICS Ashwagandha KSM 66 Pure Organic Root Powder Extract Ayurvedic Supplement - Focus, Mood Support, Increase Energy, Strength, 600mg of Natural KSM66 for Superior Absorption - 120 Capsules

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Clinically Proven: Backed by 20 years of research, our KSM-66 ashwagandha root extract has been clinically tested to effectively support cognitive function, athletic performance, stress management, and overall well-being with an effective dose of 600mg. This potent adaptogen helps maintain balance in the body, providing unparalleled therapeutic effects. Take advantage of this Ayurvedic super-herb to revolutionize your health.
•Standardized 5% Withanolide Content: TRIBE ORGANICS ashwagandha supplements have a standardized 5% withanolide content. This ensures that you get a consistent and reliable dose of the active ingredient, which is responsible for the herb's many benefits. You no longer have to guess the correct dose and won't experience any unpleasant effects from taking too much or too little. With this stress relief supplement, you can achieve steady and effective results.
•Benefits for All Ages and Athletes: According to reports, giving Ashwagandha root extract to kids or teenagers daily for up to 8 months is safe and has no toxic effects. This pill benefits children by supporting their growth and boosting their immune systems. However, it is crucial to seek advice from a doctor. KSM-66 Ashwagandha is ideal for fitness enthusiasts, as it has been proven to enhance muscle performance, energy levels, endurance, strength, and cardiovascular performance.
•Award-Winning Premium Organic Ashwagandha: Our capsules are undisputedly the best. We've sourced the purest, high-quality herbs to create a supplement with an exceptional 5% withanolides extraction concentration. We have expertly fortified our capsules with grass-fed milk to ensure maximum bioavailability. Unlike other supplements, we don't use black pepper fillers. Instead, each serving of our capsules contains a full-spectrum KSM-66 organic ashwagandha root extract with 6000 mg of dry herb.
•Green Chemistry: We at TRIBE ORGANICS uphold the "Green Chemistry" principles while producing KSM 66 ashwagandha in the USA. We abstain from using alcohol or chemical solvents in the process. Moreover, we donate 1% of our total sales to 1% for the Planet, an international organization contributing to environmental and educational causes. We are devoted to providing customized assistance and offer a full refund if you are unsatisfied with your purchase. Join us in creating a greener future!

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$36.99

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NOW Foods

NOW Supplements, KSM-66 Ashwagandha®, Stress and Sleep Support, 90 Veg Capsules

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•600 mg Per Veg Capsule: A full-spectrum extract that is produced using a unique proprietary extraction process without using alcohol or any other chemical solvents
•Supports a healthy response to everyday stress, reduces stress-related eating, and promotes restful sleep*
•May also enhance mood and cognition as well as support sexual well-being in men and women*
•GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation)
•Packaged in the USA by a family owned and operated company since 1968

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$18.17

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Horbäach

Horbäach KSM-66 Ashwagandha 600mg | with L-Theanine | 60 Coated Caplets | Vegan, Non-GMO, Gluten Free Complex Supplement

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•KSM-66 ASHWAGANDHA: Get powerful support from this potent herb in one advanced supplement!
•VEGAN FORMULA: Receive 600 mg of KSM-66 Ashwagandha Extract plus 200 mg L-Theanine per serving
•EXPERTLY CRAFTED: Our professional formula is backed by our commitment to purity and potency
•HORBAACH MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
•FREE OF: Gluten, Wheat, Yeast, Milk, Lactose, Soy, Artificial Flavor, Preservatives & Non-GMO

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$9.69

$11.40

-15%

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Nootropics Depot

Nootropics Depot KSM-66 Ashwagandha Capsules | 300mg | 90 Count | Withania somnifera Extract | Ayurvedic Herb | Adaptogen Supplement | Promote Relaxation*

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Stress Support: Studies have shown that KSM-66 achieves significant stress relief*. Helping with stress while achieving a natural calm state of mind as well as a noticeable mood boost*.
•Cognition and Memory: They also showed statistically significant improvement in key components of Wechsler Memory Scale, executive function and attention using KSM-66.*
•Energy and Stamina: This study evaluated improvement induced by an exercise regimen in healthy athletes with and without KSM-66 supplementation. Athletes taking KSM-66 showed substantially higher improvement in cardio respiratory endurance (VO2max) and self-assessed scores on the WHO Quality of Life Questionnaire.*
•LAB TESTED AND VERIFIED - All Nootropics Depot products are thoroughly lab tested to ensure our customers are receiving only the highest quality ingredients at the optimal strength, potency and purity.
•This product is not intended to diagnose, treat, cure, or prevent any disease. It has not been approved, nor have these statements been evaluated, by the FDA.

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$22.99

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DEAL SUPPLEMENT

KSM 66 Ashwagandha 1,200mg with Black Pepper, 120 Veggie Capsules – Extra Strength Root Extract – High Absorption – Adaptogenic Supplements for Relaxation, Energy, & Brain Health – Non-GMO

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Special Features – Extra strength 1,200mg Ashwagandha vegetarian friendly capsules. Full spectrum KSM-66 formula from root extract. Enhanced with black pepper for better absorption.
•Benefits & Use – Ashwagandha offers active withanolide adaptogens for daily herbal balance in men and women. A trusted ayurvedic offering support for relaxation, energy, and brain health
•Dosage & Servings – 120 veggie capsules per bottle. 3 capsules per serving provides 1,200mg ashwagandha from withania somnifera with black pepper extract.
•Purpose – KSM-66 ashwagandha is known for its full spectrum potency and natural balance of all bioactive compounds. The addition of black pepper maximizes nutrient absorption for optimal bioavailability and support.
•Quality Ensured – Non-GMO ingredients that are 3rd party lab tested and passed. Made without gluten, dairy, eggs, peanuts, soy, wheat, yeast, & tree nuts.

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$21.99

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Carlyle

Carlyle KSM-66 Ashwagandha 600mg | 120 Caplets | Extract Supplement with L-Theanine | Vegan, Non-GMO, Gluten Free

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•KSM-66 ASHWAGANDHA: Get powerful support from this potent herb in one advanced supplement!
•VEGAN FORMULA: Receive 600 mg of KSM-66 Ashwagandha Extract plus 200 mg L-Theanine per serving
•ROOTED IN WELLNESS: Carlyle provides premium, honest supplements in your pursuit to healthy living
•CARLYLE MANUFACTURERS: Laboratory Tested, Trusted Ingredients, Superior Quality, 100% Guaranteed!
•NATURALLY FREE OF: Gluten, Wheat, Yeast, Lactose, Artificial Sweetener, Preservatives & Non-GMO

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$14.89

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