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Product features.
A good fit for Comparing a named ashwagandha root extract, standardisation and actual capsule amount.
- The facts table names KSM-66 root extract and separately declares its 550mg amount and 27.5mg withanolides.
- The plant-derived capsule also lists 5mg organic black pepper, making the added botanical visible.
Ashwagandha has limited long-term safety data and important exclusions. A named extract does not guarantee the advertised stress, sleep or hormone effects for an individual.
Read the ingredient evidence.
Ashwagandha KSM-66 — Some extract-specific short-term stress and sleep evidence exists; broad hormone and long-term claims remain uncertain. Benefits, women’s context & cautions
These findings concern the stated ingredient or studied preparation. The finished formula and retail version may differ.
Check the exact version, pack size and seller terms before buying.
The details that matter.
- Photographed pack
- 90 vegan capsules
- Manufacturer serving
- 1 capsule; 90 servings per bottle
- Actual root extract
- 550mg KSM-66 ashwagandha root extract (10:1)
- Declared withanolides
- 27.5mg per capsule; 5% standardisation
- Headline root equivalent
- 5500mg; not the extract weight
- Additional botanical
- 5mg organic black pepper per capsule
- NCCIH advises avoiding ashwagandha during pregnancy or breastfeeding and notes thyroid, autoimmune and medicine concerns.
- Liver injury has been reported, and long-term safety is uncertain. Review suitability and current medicines before considering a botanical supplement.
- Compare actual extract and withanolide amounts across brands; root-powder equivalent figures alone do not describe a matching formulation.
Cycling & duration.
Ingredient timeframes describe the cited preparation; they do not establish a cycle for every finished formula.
Ashwagandha KSM-66
- On/off pattern
- No validated on/off schedule identified.
- Duration & evidence
- Most stress and sleep trials last 6-12 weeks. NIH describes tolerability data for about 3 months; safety over longer periods is uncertain.
- When to review
- Review the specific stress or sleep goal before extending use beyond about 3 months, and earlier if adverse effects develop.
- A planned break has not been shown to prevent thyroid effects or liver injury. Symptoms suggesting liver injury need prompt assessment, not an automatic restart after a rest period.
Duration sources: NIH ODS: ashwagandha efficacy and safety. Checked 2026-11-06.
Read the guide to supplement cycling, courses and review periods
How we assessed it.
Exact Amazon UK listing, product photograph and manufacturer ingredients and serving table checked on 6 November 2026. Descriptions compare label features; Gram Health has not tested this product or verified batch composition. Catalogue inclusion does not establish clinical effectiveness.
Retailer source: Amazon UK: VitaBright Organic Ashwagandha KSM-66 90 capsules · Details checked 2026-11-06.
VitaBright: KSM-66 Ashwagandha extract and withanolide serving table
NCCIH: ashwagandha evidence and safety
These features explain the choice; individual fit, taste and health suitability can differ. Current stock, price and seller terms belong to the specific listing.
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A different way to meet the need.
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Organic Ashwagandha KSM-66
A good fit for A named KSM-66 root extract and a small capsule pack.
A KSM-66 root extract in a plant-cellulose capsule, with the current extract quantity and standardisation stated on the product page.
Read the ingredient evidence.
Ashwagandha KSM-66 — Some extract-specific short-term stress and sleep evidence exists; broad hormone and long-term claims remain uncertain. Benefits, women’s context & cautions
These findings concern the stated ingredient or studied preparation. The finished formula and retail version may differ.
Calm+ KSM-66 Ashwagandha Complex - 60 Capsules
A good fit for Comparing the exact composition of an ashwagandha combination with simpler single-ingredient root extracts.
A vegan capsule combining 250mg KSM-66 ashwagandha extract, 200mg L-tryptophan, 1.7mg vitamin B6 and 20mg black pepper extract. The 3000mg ashwagandha headline is a root-powder equivalent, not the actual extract mass.
Read the ingredient evidence.
Ashwagandha KSM-66 — Some extract-specific short-term stress and sleep evidence exists; broad hormone and long-term claims remain uncertain. Benefits, women’s context & cautions
These findings concern the stated ingredient or studied preparation. The finished formula and retail version may differ.
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