EVIDENCE-BASED SUPPLEMENT SCORING
7.5/10
SOLID OPTION

Confidence: 95%

Nature's Lab Extra Strength Ashwagandha KSM 66 Extract - 5% Withanolides, Pure Organic Ashwagandha Root Powder - Supports Stress Relief, Focus and Strength Support* - 120 Ct (60 Day Supply)

Nature's Lab Extra Strength Ashwagandha KSM 66 Extract - 5% Withanolides, Pure Organic Ashwagandha Root Powder - Supports Stress Relief, Focus and Strength Support* - 120 Ct (60 Day Supply)

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Decision summary

CONSIDERSOLID OPTION

A solid product, but not a clean win. The main trade-off is weaker dosing.

Best for

Buyers who want a solid pick and can tolerate a couple of trade-offs.

Consider another option if

You care a lot about label clarity and want fewer unknowns.

Score breakdown

Tap a module to see what it measures. A 0 can reflect missing disclosure, not just a negative result.

Dosage quality

4.0/10

Dosing looks weaker than ideal

Checks whether labeled ingredient amounts fall within clinically studied ranges (not just regulatory minimums). Low/0 can reflect under-dosing or missing amounts (e.g., proprietary blends).

Score summary

The supporting evidence profile is relatively strong. The main limitation is that ashwagandha: dose 1300.0mg exceeds upper_dose 1250.0mg.

Strengths

The supporting evidence profile is relatively strong
The formula stays relatively clean on excipients
The formulation has a clearer overall purpose

Weaknesses

Ashwagandha: dose 1300.0mg exceeds upper_dose 1250.0mg
Ashwagandha: standardization missing — withanolides — expected standardization: 5.0 % (-2)
Product name or brand not detected (-1)

Final verdict

A solid product, but not a clean win. The main trade-off is weaker dosing.

Ingredient Analysis & Evidence

A closer look at the main ingredients, how they influence the score, and the supporting evidence when available. Tap any ingredient to expand.

⚠ Strong evidence exists, but dose is above the upper dose range

Dose is above the upper dose range. One of the weaker points: Dose is higher than typically recommended ranges. The declared form is acceptable, but not among the best-absorbed options.

Scientific evidence

RCT

Wankhede et al. RCT ashwagandha and testosterone levels

American Journal of Men's Health • 2015

PMID: 31991540.0

RCT

Chandrasekhar et al. RCT ashwagandha and cortisol in stressed adults

Indian Journal of Psychological Medicine • 2012

PMID: 23439798.0

Nature's Lab Extra Strength Ashwagandha KSM 66 Extract - 5% Withanolides, Pure Organic Ashwagandha Root Powder - Supports Stress Relief, Focus and Strength Support* - 120 Ct (60 Day Supply)

Nature's Lab Extra Strength Ashwagandha KSM 66 Extract - 5% Withanolides, Pure Organic Ashwagandha Root Powder - Supports Stress Relief, Focus and Strength Support* - 120 Ct (60 Day Supply)

Warnings & notes

Important label or formulation details that may affect how this product should be interpreted.

!

Dose quality may be a limiting factor

Declared amount may be weaker than ideal for a stronger result.

Warning
i

Some label details are missing or unclear

Incomplete disclosure makes the product harder to evaluate confidently.

Info

There is a formulation caveat worth noting

Product name or brand not detected (-1)

Note

Methodology

Read our methodology overview to understand how SuppScoreLab combines multiple scientific dimensions into one practical score.

View methodology →

This evaluation is based on the product label and declared Supplement Facts available at review time. It does not verify laboratory-tested composition, purity, or batch-level quality. This content is educational and not medical advice. Consult a qualified healthcare professional for personal health decisions. Affiliate disclosure: SuppScoreLab may earn a commission from qualifying Amazon links.

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