At 450mg per capsule, you're already within the clinical dose range studied for stress and cortisol reduction. Follow the label's recommendation of 2-3 capsules daily and you'll be at 900-1,350mg — well above the minimum effective dose. **Ashwagandha** has solid clinical backing for lowering perceived stress and supporting sleep quality, and this product gives you enough to work with.

The extract is standardized to 2.5% withanolides (11mg per capsule), which confirms you're getting the active compounds responsible for ashwagandha's effects. However, this isn't a branded extract like KSM-66 or Sensoril, which have their own clinical trials using specific extraction methods. You're getting a generic standardized extract — it should still deliver, but the research trail is less direct.

One thing to watch: the label suggests up to 3 capsules daily, which puts you at 1,350mg. That's generous, and most clinical trials cap at 600mg for branded extracts. Starting with 1 capsule (450mg) is a reasonable approach to assess your tolerance before scaling up.

BioStacks
NOW

Standardized Extract Ashwagandha 450 mg

1 Capsule × 2/day · 180 servings · $0.12/serving

iHerbAmazon

Best for

Stress & Mood

Ingredients (1)

Total Withanolides

100%

Dose/day

22 mg

Target

5–50 mg

Form

Standard

Other Ingredients (3)

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

HypromelloseCapsule

Plant-derived capsule material from cellulose

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

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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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