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Product Review

Nutricost KSM-66 Ashwagandha 600 mg

Nutricost · Capsule · 600 mg

Price/day

€0.18

Dose

600 mg

Servings/pack

90

Pack price

€15.90

NSF Certified

Transparency Index

7.5/10

Recommended One of the best value picks for ashwagandha — especially if you want KSM-66 without spending much.

Rating breakdown

Evidence for ingredient 8.0/10

Ashwagandha (KSM-66) is one of the best-supported adaptogenic ingredients. Multiple RCTs demonstrate significant reductions in cortisol, stress, and anxiety, as well as improvements in sleep and physical performance. Solid clinical background.

Value for money 9.0/10

About €0.18 per day for KSM-66 standardized ashwagandha with 90 servings is exceptionally competitive. Clearly in the attractive price range.

Product quality 7.0/10

Nutricost uses KSM-66, the most-researched ashwagandha extract. That's a positive signal. As a value brand, the overall presentation stays functional rather than premium.

Label honesty 7.0/10

Clear disclosure of KSM-66 extract and dosage. No exaggerated promises. Typical US supplement communication, but without egregious health claims.

Third-party testing 7.0/10

Nutricost references third-party testing and NSF-certified GMP production — stronger than many budget brands, even if it is not NSF Sport certified.

Product Description

Nutricost KSM-66 Ashwagandha delivers 600 mg of the clinically studied KSM-66 extract per capsule — standardized for withanolides, the key active compound complex. KSM-66 is the most extensively researched ashwagandha extract, with numerous studies showing effects on stress reduction, sleep quality, and physical performance.

What We Like

  • KSM-66 certified extract — the gold standard in ashwagandha research
  • Excellent value for money for a patented extract
  • 600 mg per capsule — practical dosage
  • Third-party tested and GMP-compliant production

What We’re Missing

  • Not available in Germany directly — US import required
  • No NSF Sport certification despite NSF reference
  • Functional rather than premium presentation

Usage Recommendation

Take 1 capsule daily with a meal. Most studies use 300–600 mg daily.

Other Ashwagandha (Withania somnifera) products

Sunday Natural Ashwagandha KSM-66 600

8.7/10
Recommended

Life Extension Ashwagandha KSM-66

8.4/10
Recommended

Jarrow Ashwagandha KSM-66 300mg

8.3/10
Recommended

iXora KSM-66 Ashwagandha

7.8/10
Recommended

Jarrow Ashwagandha KSM-66

7.1/10
Recommended

Ingredient dossier

Ashwagandha is an Ayurvedic adaptogen backed by multiple RCTs for stress and cortisol reduction. Sleep and testosterone effects are promising but come from small studies.

Read full dossier: Ashwagandha (Withania somnifera) →