{"product_id":"ashwagandha-ksm-66-root-extract","title":"Ashwagandha KSM-66 Root Extract","description":"\u003cp\u003e\u003cstrong\u003eAshwagandha KSM-66 Root Extract\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it is \u0026amp; why it matters\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAshwagandha (Withania somnifera) is a traditional Ayurvedic adaptogen used for centuries to support the body’s response to stress. The KSM-66 extract is the most clinically studied full-spectrum root extract. It helps regulate cortisol, supports deeper sleep, reduces anxiety, and may improve physical performance and recovery — making it one of the most evidence-backed adaptogens available.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEvidence rating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e⭐⭐⭐⭐\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eStrong\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(multiple high-quality RCTs and meta-analyses for stress, anxiety and sleep; promising data for physical performance).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSimple Dosage (updated 2026 guidance)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor stress \u0026amp; anxiety:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e300–600 mg KSM-66 daily (most studies use 300–500 mg).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor sleep:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e300–600 mg taken 1–2 hours before bed (Huberman \u0026amp; Attia protocol).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e300–600 mg daily, ideally in the evening or split.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTake with or without food. Best taken in the evening to avoid blunting natural morning cortisol. Cycle 8–12 weeks on, 2–4 weeks off if using long-term.\u003c\/p\u003e\n\u003cp\u003e→\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLearn more in our full research summary: “Ashwagandha for Stress, Sleep \u0026amp; Performance”\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Ashwagandha is great for different people\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAshwagandha for Sleep \u0026amp; Recovery\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAshwagandha is one of the best-researched supplements for improving sleep quality and reducing sleep latency. A 2021 systematic review and meta-analysis found significant improvements in sleep parameters in adults with insomnia or stress-related sleep issues.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/artifacts.grokusercontent.com\/pages\/ashwagandha-for-sleep-recovery\"\u003e→\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLearn more in our full research summary: “Ashwagandha for Sleep \u0026amp; Recovery”\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAshwagandha for Stress \u0026amp; Anxiety (Foundational Health)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMultiple RCTs and a 2024 meta-analysis show Ashwagandha significantly reduces perceived stress, anxiety scores, and cortisol levels. Dr. Peter Attia takes 600 mg before bed as part of his sleep stack. Dr. Andrew Huberman recommends 300–600 mg in the evening to lower cortisol without disrupting morning energy.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/artifacts.grokusercontent.com\/pages\/ashwagandha-for-stress-anxiety\"\u003e→\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLearn more in our full research summary: “Ashwagandha for Stress \u0026amp; Anxiety”\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAshwagandha for Performance \u0026amp; Energy\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 2021 Bayesian meta-analysis found Ashwagandha supplementation improved muscle strength, muscle mass, cardiorespiratory fitness (VO₂ max), and recovery in healthy adults. A 2023 narrative review supports its role in reducing exercise-induced fatigue and muscle damage. Evidence is promising but not as robust as the stress\/sleep data.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/artifacts.grokusercontent.com\/pages\/ashwagandha-for-performance-energy\"\u003e→\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLearn more in our full research summary: “Ashwagandha for Performance \u0026amp; Energy”\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eThis is not medical advice. BioHackNZ provides general information based on published research. This is a complementary supplement and is not intended to diagnose, treat, cure, or prevent any disease. Always consult your healthcare provider before starting any supplement regimen. Individual results vary.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eLast updated:\u003c\/strong\u003e 22 August 2026 | BioHackNZ Research Team\u003c\/p\u003e","brand":"BioHackNZ","offers":[{"title":"Default Title","offer_id":47892683260140,"sku":null,"price":0.0,"currency_code":"NZD","in_stock":false}],"url":"https:\/\/biohacknz.com\/products\/ashwagandha-ksm-66-root-extract","provider":"BioHackNZ","version":"1.0","type":"link"}