If you're looking for stress relief and lower cortisol, **Ashwagandha** has multiple RCTs supporting those benefits, and this product combines three forms of the herb — root powder (380mg), root extract (280mg), and a CO2 extract (10mg) — totaling 670mg per caplet. What this means for you: that total sits above the 300–600mg range studied in most clinical trials using standardized extracts like KSM-66 or Sensoril.

The withanolide content is where it gets nuanced for you. The label shows about 2.16mg total withanolides across all three sources. KSM-66 standardizes to 5% withanolides, delivering roughly 15mg per 300mg dose. Himalaya's withanolide concentration is significantly lower, meaning you're getting a full-spectrum whole-herb approach rather than a concentrated extract. Whether that matters depends on whether withanolide concentration or whole-plant synergy drives outcomes — the research is mixed.

If you want a standardized, research-matched ashwagandha dose, a KSM-66 or Sensoril extract would more closely mirror what was used in clinical trials. This product takes a traditional whole-herb approach, which may appeal to you but is harder to compare to published study protocols.

BioStacks
Himalaya

Organic Ashwagandha

Other · 1 Caplet · 90 servings · $0.36/serving

iHerbAmazon

Best for

Stress & Mood

Ingredients (3)

Ashwagandha, Powder

100%

Dose

380 mg

Target

300–600 mg

Form

Standard

Ashwagandha Root Extract

93%

Dose

280 mg

Target

300–600 mg

Form

Standard

organic Ashwagandha supercritical CO2 extract

3%

Dose

10 mg

Target

300–600 mg

Form

Standard

Other Ingredients

No other ingredients listed

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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