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#1 in Herbal Supplements Third-Party Tested

Nutricost Ashwagandha KSM-66

by Nutricost

"Clinical-dose KSM-66 ashwagandha at Nutricost's unbeatable price"

Amazon Rating
4.6/5
Reviews
28,000+
Price Range
$16-20
Servings
90 capsules
GMP CertifiedNon-GMO
Our Editorial Rating
9.0
Excellent
FormCapsule
SubcategoryAshwagandha Extract
View on Amazon

Overview

Nutricost Ashwagandha delivers 600mg of KSM-66 — the most clinically studied ashwagandha extract in the world — per capsule. KSM-66 is a full-spectrum root extract standardized to 5% withanolides, produced through a unique water-based extraction process that preserves the natural balance of active compounds. Over 24 clinical trials have been conducted on KSM-66, demonstrating benefits for stress reduction, cortisol lowering, testosterone support, and athletic performance.

Key Ingredients

IngredientAmount
KSM-66 Ashwagandha Root Extract600 mg
Withanolides (5%)30 mg

Pros & Cons

What We Like

  • KSM-66 — most studied ashwagandha extract
  • 600mg clinical dose per capsule
  • 90 capsules — 3-month supply
  • Under $0.22 per capsule
  • 24+ clinical trials on KSM-66

What Could Be Better

  • Some people experience GI upset
  • May interact with thyroid medications
  • Not recommended during pregnancy
  • Effects take 4-8 weeks to notice

Who Is This For?

Best For

  • Stress and cortisol management
  • Anxiety reduction
  • Athletic performance
  • Budget ashwagandha seekers

Not Ideal For

  • Those on thyroid medication
  • Pregnant or nursing women
  • People with autoimmune conditions
  • Those wanting immediate effects

Our Verdict

9.0/10 — Excellent

Nutricost Ashwagandha KSM-66 is the best value ashwagandha supplement available. The 600mg KSM-66 dose matches clinical studies, and at under $0.22 per capsule, it's significantly cheaper than branded alternatives. The 24+ clinical trials behind KSM-66 provide strong evidence.

Alternatives to Consider

No direct alternatives listed for this product yet.