Ashwagandha capsules — KSM-66® root extract
Full-spectrum extract from the root only, standardised to ≥5% withanolides.
Our ashwagandha uses KSM-66®, a root-only extract standardised to 5% withanolides. Two capsules provide a daily serving of 600 mg of this researched ingredient.
Why this matters
A named root extract, a defined concentration and a straightforward daily routine.
- Root-only KSM-66®
KSM-66® is made from ashwagandha root and standardised to 5% withanolides, naturally occurring plant constituents. This gives our formula a precisely specified botanical ingredient.
- An ingredient studied in humans
KSM-66® is identified by name in published human studies. We selected this documented extract for our ashwagandha formula, with the research references available below.
- Two capsules a day
The daily two-capsule serving contains 600 mg KSM-66® extract and 30 mg withanolides. The full ingredient list, usage instructions and suitability information are all available on the product page.
KSM-66® root extract
Ashwagandha is Withania somnifera, a plant traditionally used in India. This formula uses KSM-66®, an extract made exclusively from the root.
What makes this KSM-66®?
KSM-66® is the Ixoreal Biomed root extract used in this formula. It is standardised to 5% withanolides: 300 mg extract and 15 mg withanolides per capsule.
Two capsules a day, 45 daily servings
Take two capsules daily with water. The 90-capsule pack contains 45 daily servings.
Published research
Selected peer-reviewed human trials that used KSM-66® specifically:
- PubMed ↗
Chandrasekhar et al. (2012)
Randomised, double-blind, placebo-controlled trial (n=64) in adults with a history of chronic stress; investigated perceived-stress scales and serum cortisol over 60 days.
Indian Journal of Psychological MedicinePubMed/MEDLINE · RCT
- PubMed ↗
Salve et al. (2019)
Randomised, double-blind, placebo-controlled trial (n=60 healthy adults), three arms over 8 weeks; investigated stress scales, serum cortisol and a sleep-quality measure.
CureusPubMed
- PubMed ↗
Wankhede et al. (2015)
Randomised, double-blind, placebo-controlled trial (n=57 men) alongside an 8-week resistance-training program; investigated muscle strength, body composition and recovery markers.
Journal of the International Society of Sports NutritionPubMed/MEDLINE · RCT
Frequently asked
How much KSM-66® should I take?
The product label specifies two capsules daily: 600 mg root extract containing 30 mg withanolides. One 90-capsule pack gives 45 daily servings.
What does 5% withanolides mean?
The extract contains 5% withanolides. Two capsules provide 600 mg extract and 30 mg withanolides.
Does it contain ashwagandha leaves?
No. This formula uses KSM-66® extract made from the root, plus an HPMC capsule shell.
Is the product vegan?
Yes. The formula contains root extract and a plant-based HPMC capsule, with no gelatin.
Who should not take ashwagandha?
The label excludes children, pregnant and breastfeeding women and use alongside sedative, sleep-inducing or anti-epileptic medicines. NCCIH also advises against ashwagandha for thyroid or autoimmune disorders and before surgery. Discuss other conditions or medicines with a healthcare professional.
Important informationDo not exceed the recommended serving. Not suitable for children, pregnant or breastfeeding women, or anyone allergic to an ingredient. Keep out of the reach of young children. Food supplements do not replace a varied, balanced diet and a healthy lifestyle.