Ashwagandha KSM-66 (Withania somnifera) | 60 Capsules

KSM-66® is the world's most clinically studied, full-spectrum ashwagandha root extract — standardised to a minimum of 5% withanolides and backed by over 24 gold-standard human clinical trials. Derived exclusively from the root using a proprietary extraction process that preserves the complete natural balance of the plant's bioactive compounds.

At The Gumpii Apothecary, we chose KSM-66 for customers seeking clinical-grade potency and documented results — particularly for cortisol regulation, hormonal balance, thyroid support, and performance.

Traditional Use

Ashwagandha (Withania somnifera) has been used for over 3,000 years in Ayurvedic medicine as a rasayana — a rejuvenating tonic for strength, stamina, and resilience. Traditionally used to support the nervous system, reproductive health, and recovery from fatigue.

Key Benefits of KSM-66

• Stress & cortisol regulation — clinically shown to reduce serum cortisol levels and perceived stress scores
• Hormonal balance — supports hormonal equilibrium in women, including during PMS and perimenopause
• Thyroid support — shown to support healthy T3 and T4 thyroid hormone levels
• Energy, stamina & recovery — improves VO2 max, muscular endurance, and post-exercise recovery
• Cognitive function — supports memory, focus, and reaction time
• Sleep quality — supports sleep onset and quality via GABA-mimetic activity
• Immune modulation — withanolides support healthy immune function

How to Use

Take 1–2 capsules daily with food, or as directed by your healthcare practitioner. Best taken in the morning or early afternoon. Can be taken consistently as a daily adaptogenic tonic.

How Does This Compare to Our Standard Ashwagandha?

Ashwagandha is a well-researched adaptogenic herb with broad clinical support — regardless of formulation. Research published via the National Institutes of Health confirms that ashwagandha root extract, in general, can reduce cortisol levels, lower perceived stress and anxiety, and support sleep quality, particularly in those experiencing insomnia or chronic stress. Our customers consistently report improvements in mood and sleep with our standard Ashwagandha Capsules, and we continue to stock them because the results speak for themselves.

So what makes KSM-66 different? It comes down to standardisation and clinical depth. KSM-66 is a certified, full-spectrum root extract with a guaranteed minimum of 5% withanolides — the primary bioactive compounds responsible for ashwagandha's adaptogenic effects. It is backed by over 24 randomised controlled trials specifically using this extract, with documented outcomes in cortisol reduction, hormonal balance, thyroid function, physical performance, and cognitive health.

Both are excellent — the right choice depends on your goal.

• For sleep support, mood regulation, and gentle daily stress relief — our standard Ashwagandha Capsules are a trusted, accessible, and highly effective option.
• For targeted hormonal support, adrenal health, cortisol management, thyroid function, or performance — KSM-66 offers the clinical-grade potency and standardised concentration to match those goals.

Precautions

• Not recommended during pregnancy or breastfeeding without practitioner guidance
• May interact with thyroid medications, immunosuppressants, or sedatives — consult your healthcare provider if applicable
• Not recommended for those with autoimmune conditions without professional supervision

Stack This With

• Magnesium Glycinate — for enhanced sleep, muscle relaxation, and nervous system support
• Organic Rhodiola Root Extract — complementary adaptogen for energy and stress resilience
• Glycine Capsules — inhibitory amino acid that works synergistically for calm and cortisol balance
• Organic Lemon Balm Extract — GABA-modulating nervine for anxiety and sleep
• Organic Chaste Tree Berries Extract — for hormonal cycle support alongside KSM-66

Naturally Occurring Compounds

KSM-66 ashwagandha root extract contains a naturally occurring profile of bioactive compounds including withanolides (min. 5%), withanosides, alkaloids (isopelletierine, anaferine), saponins, and iron. The full-spectrum root extraction preserves the natural synergy of these compounds — considered superior to isolated withanolide extracts.

Research & References

• Chandrasekhar K, et al. (2012). A prospective, randomized double-blind, placebo-controlled study of safety and efficacy of a high-concentration full-spectrum extract of ashwagandha root in reducing stress and anxiety in adults. Indian Journal of Psychological Medicine, 34(3), 255–262.
• Wankhede S, et al. (2015). Examining the effect of Withania somnifera supplementation on muscle strength and recovery. Journal of the International Society of Sports Nutrition, 12, 43.
• Sharma AK, et al. (2018). Efficacy and safety of ashwagandha root extract in subclinical hypothyroid patients. Journal of Alternative and Complementary Medicine, 24(3), 243–248.
• National Institutes of Health — supporting research on ashwagandha's role in stress reduction, anxiety management, and sleep quality improvement across multiple clinical studies.