Nutricost KSM-66 Ashwagandha Root Extract 600mg, 60 Veggie Caps – 5% Withanolides – with BioPerine – Full-Spectrum Root Extract | ⭐ Flexiology.Store Recommended
$14.95
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Price: $14.95
(as of Oct 02, 2025 06:56:11 UTC – Details)
Product description
KSM-66
KSM-66 is an extract of Ashwagandha root. Ashwagandha root is native to India and has been used in Ayurveda for centuries. KSM-66 Ashwagandha has the highest percentage of withanolides of all branded root-only Ashwagandha extracts on the market.
Nutricost’s KSM-66
Nutricost KSM-66 capsules are packed with Organic Ashwaghanda Extract and Bioperine. Each bottle contains 60 capsules for 60 servings.
600mg of Organic KSM-66 Ashwagandha Extract Per CapsuleMin. 5% total withanolides>0.1% Withaferin A5mg added BioPerine for increased absorption.Vegetarian Friendly
Simplicity in a Bottle
By keeping our recipes simple and clean, you get the best experience possible with Nutricost.
GMP Compliant FacilityLocated in the USA3rd Party Testing On All Products & Batches
Nutricost: Health for EveryBODY
Nutricost, located and headquartered in the USA, only uses the best ingredients to ensure maximum quality and to help you feel your best! By keeping our recipes simple and clean, you get the best experience possible with Nutricost. All Nutricost supplements are manufactured in a GMP-compliant facility, provide high-quality ingredients, and offer a variety of options for your health support.
From exact ingredients to our simple formulations, each of our supplements states clearly what they provide so you know you’re getting what you want. Nutricost makes it our mission to provide you with clear choices to support health for EveryBODY.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease.
Is Discontinued By Manufacturer : No
Package Dimensions : 3.9 x 2.01 x 1.97 inches; 0.02 ounces
Item model number : NC-KSM66-60C
Date First Available : February 2, 2018
Manufacturer : Nutricost
ASIN : B079K32QB6
Best Sellers Rank: #2,039 in Health & Household (See Top 100 in Health & Household) #4 in Ashwagandha
Customer Reviews: 4.5 4.5 out of 5 stars 3,085 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
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
Customers say
Customers report positive effects of this ashwagandha supplement on sleep quality, noting it helps them feel less anxious and makes their mind peaceful. Moreover, the supplement shows effectiveness after about a month of use, with one customer reporting improved aerobic and anaerobic workout performance. They appreciate its straightforward formula, good taste, and value for money. However, experiences with side effects are mixed, with some customers reporting no issues while others experienced headaches.
🌿 Expert Tip: Selected by our Flexiology Experts for quality & value.
⚠️ Disclaimer: Information is for educational purposes and not a substitute for medical advice. Consult your physician before use. Flexiology.Store is not responsible for any adverse effects.
8 reviews for Nutricost KSM-66 Ashwagandha Root Extract 600mg, 60 Veggie Caps – 5% Withanolides – with BioPerine – Full-Spectrum Root Extract
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YacbeB –
Excellent quality and noticeable effect
I have been taking these Ashwagandha KSM-66 capsules from Nutricost for several weeks and have noticed an improvement in my energy level and my ability to handle daily stress. The capsules are easy to swallow, they have no unpleasant taste and the 600 mg presentation seems adequate to me
Lowmer –
Clean and effective
Love this brand i have multiple supps from them and they all are very high quality. This stuff takes a bit to build up in your system but ive got my blood tests done and it seems to boost my testosterone. It also helps me and my girlfriend with sleep so id definitely recommend for a nighttime supp.
The dude –
Great product!
This stuff works great for helping to calm me down and keep me levelheaded. I can feel a noticeable difference when taking them.
Gurung m. –
Calming
It’s calming helps to sleep well .great value
Jose Bonifassi –
Goodbye to stress
Excellent product, works from the first shot. 100% natural, cost and quality the best
Kostiantyn Valikhov –
Noticeable calm and better sleep
After a couple of weeks of taking KSM-66, I feel less stressed and my sleep quality improved. Capsules are easy to swallow, and I appreciate the standardized extract. Definitely helps with relaxation and recovery.
Amazon Customer –
Stress/Cortisol management A+
I take these for stress and cortisol management and they work wonderfully. Don’t buy the hype about it functioning like a test booster, there’s simply not enough peer reviewed science out there to support it. Not to mention you really shouldn’t be playing around with hormone levels without a doctor involved anyway. They’re reasonably sized capsules and thus are easy to swallow, there’s no weird taste or burps after taking them.
Baibhav Bhattarai –
Not Much More Than an Expensive Placebo Effect
As someone who’s experimented with a bunch of different herbal supplements, I had high hopes when I decided to give Nutricost’s KSM-66 Ashwagandha extract a try. The promised stress relief, enhanced focus, and improved mood sounded incredibly appealing.Unfortunately, after diligently taking these capsules daily for a couple of months, I can’t really say I noticed any substantial effects – positive or negative. No discernible reduction in my anxiety levels, no boost in cognitive powers, no extra reserves of calm under pressure. Just kind of…the same old me.Now, I’ll caveat that by saying everyone’s body chemistry is different, so supplements can definitely produce varying results from person to person. Maybe these just didn’t work harmoniously with my own systems and biochemistry. But from my personal experience? This particular Ashwagandha product didn’t really “do” much at all.The capsules themselves seemed fine as far as quality and potency claims. No weird after-tastes or side effects. But also no real tangible benefits to point to, at least not for me.I kept waiting for that renowned ancient herbal magic to kick in and have me feeling like a freshly rejuvenated monk. But after sixty pills, I simply felt…pretty much the same as before I started taking them, just a decent chunk of change lighter in the wallet.So unless you’re already a true believer in Ashwagandha’s effects and just want a reputable brand, you may want to temper your expectations before pulling the trigger on these. Or at least be prepared that they could potentially just be a very expensive placebo for you.For me, they were about as impactful as taking multivitamin gummies – which is to say, not terribly impactful at all. Not a terrible product necessarily, but also not quite the natural wonder tonic I was envisioning either.