If you don’t like something of ours, guess what happens next?
No, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon. Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and then use it to complete reams of return forms written in ancient Cyrillic script.
We just . . . wait for it . . . give you your money back. Holy moo cows. And that means you can say "yes" now and decide later.
Can KSM-66® ashwagandha root extract banish stress, abolish fatigue, and eliminate anxiety?
No.
Can it supercharge libido, burn body fat, and boost testosterone levels?
Absolutely not.
But can it enhance cognitive function, mood, and athletic performance and reduce inflammation and oxidative stress?
Yes. Or your money back
And how does KSM-66® ashwagandha root extract do these things?
It contains naturally-occurring bioactive compounds known as adaptogens, which support various systems in the body related to physical, environmental, and emotional resilience, including the hypothalamic-pituitary-adrenal (HPA) axis.[1][2]
The HPA axis regulates how your body responds to stress, affecting strength, power, endurance, recovery, immune function, cognition, mood, sleep, fertility, and more. Even a slight disturbance in your body’s HPA axis can impair any and all of these crucial functions.
Thus, when you take an adaptogen supplement that can aid the HPA axis like KSM-66® ashwagandha extract, your body and mind can better deal with stress.
24 peer-reviewed scientific studies support our KSM-66® Ashwagandha’s form and dose[3]
That’s 283 pages of scientific research that shows KSM-66® Ashwagandha works exactly like we say it does.
Contains no artificial fillers, food dyes, or other chemical junk[4]
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in KSM-66® Ashwagandha.
Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited lab[5]
Every bottle of KSM-66® Ashwagandha is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.
Total formulation transparency (no proprietary blends)[6]
This means you know exactly what’s in every serving of KSM-66® Ashwagandha—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.
Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected and cGMP-compliant facilities
KSM-66® Ashwagandha is also backed by our “No Return Necessary” money-back guarantee that works like this:
If you don’t absolutely love KSM-66® Ashwagandha, just let us know, and we’ll give you a full refund on the spot. No forms or returns necessary.
So order now, try KSM-66® Ashwagandha risk-free, and see for yourself why we believe it’s the perfect ashwagandha supplement.
Can KSM-66® ashwagandha root extract banish stress, abolish fatigue, and eliminate anxiety?
No.
Can it supercharge libido, burn body fat, and boost testosterone levels?
Absolutely not.
But can it enhance cognitive function, mood, and athletic performance and reduce inflammation and oxidative stress?
Yes. Or your money back.
And how does KSM-66® ashwagandha root extract do these things?
It contains naturally-occurring bioactive compounds known as adaptogens, which support various systems in the body related to physical, environmental, and emotional resilience, including the hypothalamic-pituitary-adrenal (HPA) axis.[5][6]
The HPA axis regulates how your body responds to stress, affecting strength, power, endurance, recovery, immune function, cognition, mood, sleep, fertility, and more. Even a slight disturbance in your body’s HPA axis can impair any and all of these crucial functions.
Thus, when you take an adaptogen supplement that can aid the HPA axis like KSM-66® ashwagandha extract, your body and mind can better deal with stress.
So order now, try KSM-66® Ashwagandha risk-free, and see for yourself why we believe it’s the perfect ashwagandha supplement.
WARNING: Consuming this product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.
Legion KSM-66® Ashwagandha Ingredient (600 milligrams per serving)
KSM-66® Ashwagandha Extract (600 milligrams per serving)
Ashwagandha root extract is an herb that’s been a cornerstone of Ayurvedic medicine for centuries. It’s derived from the ashwagandha plant, also known as Withania somnifera, which grows throughout India, Africa, and the Middle East.
KSM-66® ashwagandha extract is a patented form of ashwagandha that’s standardized to contain 5% withanolides, the bioactive compounds in the plant thought to be responsible for most of its benefits.
Although all ashwagandha supplements contain some withanolides, their concentration can range from 1% to over 35% depending on how the plants are grown, processed, stored, and other factors.[7][8] Therefore, if an ashwagandha supplement doesn’t specify its withanolide concentration, it may contain too little (ineffective dose) or too much (extreme dose).
What’s more, the source of withanolides matters as well. While KSM-66® is made only from the root of the ashwagandha plant, many manufacturers cut corners by using leaves of the plant instead. While there isn’t direct evidence this is harmful, most scientific research on ashwagandha has studied the effects of consuming the root, not the leaves.
All this is why KSM-66® is considered the gold standard for ashwagandha root extract, and particularly for use in scientific research on the plant—KSM-66® has been tested in 24 clinical trials, more than any other type of ashwagandha supplement.[9]
Research shows that supplementation with KSM-66® ashwagandha root extract . . .
The clinically effective dose of KSM-66® ashwagandha root extract is between 100 and 600 milligrams, though most research shows 600 milligrams is superior to lower doses.
No Artificial Food Dyes, Fillers, or Other Unnecessary Junk
Artificial food dyes aren’t a hazard per se, but studies show they can cause negative effects in some people, including gastrointestinal toxicity and behavioral disorders.[29][30][31][32][33]
Third-Party Lab Tested for Potency & Purity
Every bottle of KSM-66® Ashwagandha is analyzed in a state-of-the-art ISO 17025 accredited lab to verify what is and isn’t in it. That way, you know exactly what you’re getting and putting into your body.
See how Legion KSM-66® Ashwagandha compares to the rest.
Active Ingredient Per Serving
Clinically Effective Ingredient & Dose
KSM-66® Ashwagandha
Third-Party Lab Tested
Labdoor Certified Brand
Price Per Serving
Legion KSM-66® Ashwagandha
600 mg per serving
600 mg per serving
$
GNC Herbal Plus Ashwagandha
600 mg per serving
600 mg per serving
$1.00
NOW Foods Ashwagandha
450 mg per serving
$0.09
Momentous Ashwagandha
300 mg per serving
$0.38
The #1 brand of natural sports supplements.
5+ million bottles sold to 1+ million customers who have left us 45,000+ 5-star reviews.
Natural Ingredients
KSM-66® Ashwagandha is naturally sourced from plants and animals and contains no artificial or synthetic substances of any kind.
Science-Backed Ingredients
The active ingredient in KSM-66® Ashwagandha is backed by published scientific studies that show benefits in healthy humans.
Clinically Effective Ingredients & Doses
The ingredient in KSM-66® Ashwagandha is included at a clinically effective level, which is the exact amount shown to be safe and effective in peer-reviewed scientific research.
Third-Party Lab Tested
KSM-66® Ashwagandha is tested by third-party labs for heavy metals, microbes, allergens, and other contaminants to ensure it meets FDA purity standards.
Made in the USA
KSM-66® Ashwagandha is made in America with globally sourced ingredients in NSF-certified, FDA-inspected facilities that adhere to Current Good Manufacturing Practice (cGMP) standards.
"No Return Necessary" Money-Back Guarantee
If you don't absolutely love KSM-66® Ashwagandha, you get a prompt and courteous refund. No forms or returns necessary.
Trusted by scientists, doctors, and everyday fitness folk alike.
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"When it comes to quality and integrity, Legion is among the best. Their products only include ingredients that are backed by research and in doses that are proven to be effective in scientific studies."
Sal Di Stefano, Justin Andrews, and Adam Schafer
Hosts of The Mind Pump Podcast
"Legion is science-based at its core. Not only do they dose all of their products based on the clinical doses proven to be effective by scientific studies, they go above and beyond the their competitors by funding new research."
Dr. Bill Campbell, PhD
Professor of Exercise Science at University of South Florida
"Legion is a tremendous company run by people I trust and respect. The quality of their supplements is second to no one. And while I don’t use many supplements, the only ones I do come from Legion."
Jordan Syatt
Strength and Nutrition Coach
"There are a lot of sleazy supplement companies out there, but Legion is not one of them. Their products are free of fillers and inactive ingredients and they take the time (and money) to test them with independent labs to ensure you're getting what you pay for."
Dr. Spencer Nadolsky, MD
Board-Certified Family Medicine Physician and a Diplomate of the American Board of Obesity Medicine
"Legion consults with nutrition experts to make honest, science-based products and then proves they're genuine with independent lab work. That's how all supplement companies should operate."
Menno Henselmans, MS
Founder of Bayesian Bodybuilding, Published Scientist, and Physique Coach
"With Legion, you really do get what you pay for. Each and every product is packed with effective doses of effective ingredients, and what’s on the label is what's actually in the bottle."
Kurtis Frank
Co-Founder and Former Lead Researcher & Writer of Examine.com
"There are three reasons I like Legion. First, they use ingredients backed by independent, peer-reviewed scientific studies. Second, the quality of their supplements exceeds many in the industry and you know you’re getting what’s on the label. Third, Mike Matthews is a solid evidence-based guy who doesn’t over-hype."
James Krieger, MS
Published Scientist, Author, and Speaker
"Legion is the only company doing everything right. They make effective products that are backed by scientific evidence, properly dose all of their ingredients, source every ingredient from the highest-quality sources, and are transparent about exactly what goes in each and every product."
Chris Barakat, MS
Published Scientist and Physique Coach
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Frequently Asked Questions
How do I use KSM-66® Ashwagandha?
Take 1 capsule daily, preferably with a meal.
What makes KSM-66® Ashwagandha different from other KSM-66® Ashwagandha supplements on the market?
There are four reasons KSM-66® Ashwagandha is superior to other forms:
It contains exactly 5% withanolides, a class of compounds thought to be responsible for most of ashwagandha’s benefits. Other forms can contain significantly less or more than this amount, making it difficult to consume the right dose.[1][2]
It’s been studied more than any other form, and is considered the gold standard of ashwagandha supplements by scientists.[3]
It’s made using the root of the ashwagandha plant, not the leaves, as the former is thought to be safer and more beneficial than the latter.
It’s made without alcohol or other chemical solvents, minimizing the risk of potentially hazardous compounds contaminating the ingredients or the environment.
While you can find some ashwagandha supplements that boast a higher withanolide content, there’s a good chance they don’t check all of the other boxes that KSM-66® Ashwagandha does, which is why it’s the best form of ashwagandha you can buy.
Can I take KSM-66® Ashwagandha with other Legion supplements?
Yes.
We’ve formulated KSM-66® Ashwagandha to work in conjunction with other Legion supplements like Performance Surge and Triumph, which also contain ashwagandha.
While taking these supplements together may result in a dose that’s greater than the clinically effective dose of 100 to 600 mg, there’s little evidence it will result in any negative side effects. If you don’t take a full dose of the other supplement or don’t take them every day, then it can also be beneficial to take KSM-66® Ashwagandha to ensure you get a clinically effective dose.
A supplement I take already contains ashwagandha. Can I benefit from KSM-66® Ashwagandha?
It depends on how much ashwagandha the other supplement contains, how much you take, and how often you take it.
If you’re already getting the clinically effective dose of 600 mg, then you may not benefit from taking KSM-66® Ashwagandha.
If you aren’t getting at least 600 mg per day of ashwagandha from your other supplements, then you want to take KSM-66® Ashwagandha to get the full benefits.
For example, our performance supplement, Performance Surge, contains 600 mg of ashwagandha, so if you take a full dose every day there’s no need to take KSM-66® Ashwagandha. Most people only take Performance Surge on days they train, though, and some prefer to only take a partial dose, so in these cases you would need to take KSM-66® Ashwagandha to get the full benefits of ashwagandha supplementation.
How much ashwagandha should I take per day? How much is too much?
It depends, primarily on how much ashwagandha you get from other supplements.
Most people get zero ashwagandha from their food, so any they do get is from other supplements. The clinically effective dose of ashwagandha is 100 to 600 mg per day, with 600 mg generally being superior to lower doses.
One study used a dose as high as 12,000 mg (20 times higher than what you’ll get from KSM-66® Ashwagandha!) without negative effects, but we don’t recommend this.[1] While there’s no established upper limit for ashwagandha supplementation, there’s little evidence you’ll benefit from taking more than 600 mg, and doing so increases your risk of side effects.
The most common thing we hear from customers is an improvement in mood, energy levels, sleep quality, and sense of well-being, but it’s important to remember that many of the benefits of ashwagandha aren’t things you’ll feel, but are still extremely beneficial for your health (supporting immune function, antioxidant activity, and healthy inflammation levels, for example).
What it boils down to is this:
When you assist some of the most important physiological mechanisms in the body by taking ashwagandha, just about everything runs better.
Are there any side effects of KSM-66® Ashwagandha?
Ashwagandha is generally safe and well tolerated by most people, and side effects are rare. That said, it can cause mild drowsiness in some people.[1][2][3]
Can KSM-66® Ashwagandha be taken while pregnant or breastfeeding?
We’re not aware of any reasons it would be harmful, but check with your doctor first.
Can KSM-66® Ashwagandha be taken with medication?
Ashwagandha may negatively interact with several medications, including diabetes, high-blood pressure, and thyroid medication, sedatives, anticonvulsants, immunosuppressants, and others. If you’re taking these medications or any others, talk to your doctor before supplementing with ashwagandha.[1]
Is KSM-66® Ashwagandha gluten-free? Soy-free? Dairy-free?
Yes.
Is KSM-66® Ashwagandha vegetarian or vegan friendly?
Yes.
What does the Prop65 warning on the label mean?
Our products include a Proposition 65 warning in compliance with California’s regulatory guidelines, which are among the most stringent and sweeping in the world.
A Proposition 65 warning does not indicate whether a product is safe or unsafe. Rather, Proposition 65 is a consumer notification law in California that requires warnings to inform consumers about the presence of one or more of over 900 substances in various types of products. These substances include naturally occurring and ubiquitous compounds, even when present at levels below those known to cause harm.
Wiciński M, Fajkiel-Madajczyk A, Kurant Z, et al. Int J Mol Sci. 2023;24(22):16513. Published 2023 Nov 20. doi:10.3390/ijms242216513.↑
3.
That’s 283 pages of scientific research that shows KSM-66® Ashwagandha works exactly like we say it does.↑
4.
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in KSM-66® Ashwagandha.↑
5.
Every bottle of KSM-66® Ashwagandha is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.↑
6.
This means you know exactly what’s in every serving of KSM-66® Ashwagandha—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.↑
1.
KSM-66® Ashwagandha is naturally sourced from plants and animals and contains no artificial or synthetic substances of any kind.↑
2.
Every serving of KSM-66® Ashwagandha contains 600 milligrams of ashwagandha that has been shown to be safe and effective in peer-reviewed scientific research.↑
3.
The active ingredient in KSM-66® Ashwagandha is backed by published scientific studies that show benefits in healthy humans.↑
4.
That’s 283 pages of scientific research that shows KSM-66® Ashwagandha works exactly like we say it does.↑
5.
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in KSM-66® Ashwagandha.↑
6.
Every bottle of KSM-66® Ashwagandha is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.↑
7.
This means you know exactly what’s in every serving of KSM-66® Ashwagandha—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.↑
Bonilla DA, Moreno Y, Gho C, Petro JL, Odriozola-Martínez A, Kreider RB. J Funct Morphol Kinesiol. 2021;6(1):20. Published 2021 Feb 11. doi:10.3390/jfmk6010020.↑
Bonilla DA, Moreno Y, Gho C, Petro JL, Odriozola-Martínez A, Kreider RB. J Funct Morphol Kinesiol. 2021;6(1):20. Published 2021 Feb 11. doi:10.3390/jfmk6010020.↑
Feng J, Cerniglia CE, Chen H. Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, AR , USA. Front Biosci (Elite Ed). 2012 Jan 1;4:568-86. ↑
Nigg JT, Lewis K, Edinger T, Falk M. Oregon Health and Science University, Portland, OR, USA. J Am Acad Child Adolesc Psychiatry. 2012 Jan;51(1):86-97.e8.↑
McCann D, Barrett A, Cooper A, Crumpler D, Dalen L, Grimshaw K, Kitchin E, Lok K, Porteous L, Prince E, Sonuga-Barke E, Warner JO, Stevenson J. School of Psychology, Department of Child Health, University of Southampton, Southampton, UK. Lancet. 2007 Nov 3;370(9598):1560-7.↑
Gao Y, Li C, Shen J, Yin H, An X, Jin H. Scientific and Technological College of Chemistry and Biology, Yantai Univ., Yantai, PR China. J Food Sci. 2011 Aug;76(6):T125-9.↑
Many companies use shipping and handling fees to increase their profit margins, but here at Legion, we hate profits, so our shipping is free!
Okay, so we do dig on profits, but we also go in for happy customers, and free shipping works like gangbusters. So, if you live in the United States, your order ships free regardless of order size, if you live in the UK, Canada, Belgium, Denmark, Germany, Netherlands, Spain, Puerto Rico, or Guam, your order ships free when it’s over $199, and if you live elsewhere, your order ships free when it’s over $299.
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We just . . . wait for it . . . give you your money back. No returns. No forms. No nonsense. Holy moo cows.
That means you can say “yes” now and decide later. You really have nothing to lose.
Free Worldwide Shipping & Returns
Many companies use shipping and handling fees to increase their profit margins, but here at Legion, we hate profits, so our shipping is free!
Okay, so we do dig on profits, but we also go in for happy customers, and free shipping works like gangbusters. So, if you live in the UK, Canada, Belgium, Denmark, Germany, Netherlands, Spain, Puerto Rico, or Guam, your order ships free when it’s over $199.
Why the restriction on international orders? Unfortunately, shipping abroad is very expensive, and if we didn’t require a minimum order size, we’d lose a lot of money. But! We're also hustling to improve our international logistics and will be passing our savings along to our international customers.
Also, if you don’t absolutely love our stuff for whatever reason, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon.
We just . . . wait for it . . . give you your money back. No returns. No forms. No nonsense. Holy moo cows.
That means you can say “yes” now and decide later. You really have nothing to lose.
Free Worldwide Shipping & Returns
Many companies use shipping and handling fees to increase their profit margins, but here at Legion, we hate profits, so our shipping is free!
Okay, so we do dig on profits, but we also go in for happy customers, and free shipping works like gangbusters. So, if you’re outside the USA, your order ships free when it’s over $299.
Why the restriction on international orders? Unfortunately, shipping abroad is very expensive, and if we didn’t require a minimum order size, we’d lose a lot of money. But! We're also hustling to improve our international logistics and will be passing our savings along to our international customers.
Also, if you don’t absolutely love our stuff for whatever reason, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon.
We just . . . wait for it . . . give you your money back. No returns. No forms. No nonsense. Holy moo cows.
That means you can say “yes” now and decide later. You really have nothing to lose.
Many ingredients in supplements don’t have any scientifically validated benefits, and many ingredients that do are often underdosed to the point of irrelevance.
That’s why we only use the choice ingredients and precise doses shown to be effective in peer-reviewed scientific studies.
You need more than great ingredients to make great products—you also need proper doses. That’s why we use the precise doses of ingredients shown to be effective in peer-reviewed scientific studies.
“Natural” doesn’t always mean “better,” but in many cases, natural ingredients are superior to artificial ones for various reasons, including purity, safety, and efficacy.
That’s why all of our ingredients in all of our products come from plant and animal sources, including sweeteners, colors, and flavors.
If you want to ensure the supplements you’re swallowing every day are safe and effective, you want to buy from a company that:
Sources ingredients from premium suppliers around the world (great supplements require great raw materials)
Tests all ingredients for purity and potency in accredited third-party labs (to conclusively verify safety and efficacy)
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Did you know that supplements can contain dangerously high levels of toxins like lead, arsenic, and cadmium?
That’s why we test every ingredient of every supplement we produce for heavy metals, microbes, allergens, and other contaminants and ensure they meet the strict purity standards set by the FDA.
While artificial sweeteners may not be as dangerous as some people claim, studies suggest that regular consumption of these chemicals may indeed be harmful to our health.
That’s why all of our supplements are naturally sweetened and flavored and contain no artificial food dyes, fillers, or other unnecessary junk.
You’ll never see a “proprietary blend” in any of our products, which is little more than a sneaky way to use tiny (ineffective) amounts of lots of ingredients and hope customers don’t know any better.
Every dose listed. For every ingredient. In every product. Anything else is unacceptable.
While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in Vitality.
Many ingredients in supplements don’t have any scientifically validated benefits. That’s why we only use choice ingredients shown to be effective in peer-reviewed scientific studies.
“Natural” doesn’t always mean “better,” but in many cases, natural ingredients are superior to artificial ones for various reasons, including purity, safety, and efficacy.
That’s why all of our ingredients in all of our products come from plant and animal sources, including sweeteners, colors, and flavors.
If you don’t like something of ours, guess what happens next?
No, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon. Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and then use it to complete reams of return forms written in ancient Cyrillic script.
We just . . . wait for it . . . give you your money back. Holy moo cows. And that means you can say "yes" now and decide later.
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In consideration of the services and/or products offered by Legion Athletics, Inc. (“Legion”) including, but not limited to, nutrition plans, exercise routines and coaching, and in addition to the payment of any fee or charge:
I knowingly and voluntarily enter into this waiver and release of liability and hereby waive any and all rights, claims or causes of action of any kind whatsoever arising out of my use of Legion’s services and/or products, and I hereby release and hold harmless Legion and its consultants, officers, contractors, agents, owners and employees from any and all responsibility, liability, cost and expenses, including for injuries, damages or disorders (physical, metabolic, or otherwise), resulting from my use of Legion’s services and/or products.
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Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited lab by Labdoor™, the gold standard of third-party lab testing.
Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited lab, the gold standard of third-party lab testing.
This product doesn’t just “contain natural ingredients”—every ingredient is naturally sourced from plants and animals. This product contains no artificial or synthetic sweeteners or flavors of any kind.
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