Optimum Nutrition
1
/
of
2
Ultimate Ashwagandha - KSM-66
Ultimate Ashwagandha - KSM-66
No reviews
No reviews
Regular price
$14.29 USD
Regular price
Sale price
$14.29 USD
Shipping calculated at checkout.
Quantity
Couldn't load pickup availability
The full picture
Everything Vyvata knows about this product — the score, the evidence, the FAQ, and where else to find shopper reviews. No hidden data. Every vendor is scored on the same published rubric — no brand can pay for placement. Read the rubric →
74/100
Verified
Six-dimension breakdown
Evidence
78
Formulation
76
Manufacturing
72
Safety
68
Transparency
74
Sustainability
60
Why this scored 74/100
KSM-66 is Ixoreal Biomed's clinically-validated ashwagandha extract standardized to 5% withanolides. This exact extract has multiple positive RCTs for cortisol reduction and perceived stress (Chandrasekhar 2012 for cortisol; Salve 2019). Named branded extract at the studied form. Sits at solid Verified. Would move to Elite with a 600mg/day serving spec explicitly matching the RCT dose and clear thyroid-monitoring safety guidance for autoimmune-thyroid patients.
Last scored: Full rubric →
Evidence & sources
The Vyvata score's Evidence dimension measures the quality of published RCT support for a product's active ingredients at the label dose. Our source hierarchy: double-blind RCTs in MEDLINE-indexed journals > single-blind RCTs > open-label trials > observational studies > mechanism papers > N=1 case studies (anecdotes). Predatory journals and manufacturer-authored studies without independent replication are weighted down.
Product-specific evidence citations for this item are embedded in the analysis text on the "Analysis" tab. For the full framework and evidence hierarchy, see the methodology page.
How to read the Evidence dimension
- 80–100: Multiple double-blind RCTs in indexed journals directly testing this product OR the exact ingredients at the exact dose.
- 60–79: Single double-blind RCT + supporting ingredient literature at the studied dose.
- 40–59: Open-label trials + ingredient literature; no product-specific double-blind evidence.
- 20–39: Ingredient literature only; no product-specific trials or trials in predatory venues.
- 0–19: No credible evidence base or unverifiable claims.
Frequently asked questions
Auto-generated from Vyvata's scoring data for this product. For general questions about the store (shipping, returns, wholesale), see the site FAQ.
What is Ultimate Ashwagandha - KSM-66?
Ultimate Ashwagandha - KSM-66, categorized under Stress, mood & mental wellness in the Supplements vertical. It is scored on the Vyvata Scoring Framework — an independent 6-dimension rubric applied uniformly to every product Vyvata lists.
How does Ultimate Ashwagandha - KSM-66 score on the Vyvata rubric?
74/100 overall — Verified tier (70–84 band). Per-dimension breakdown: Evidence 78, Formulation 76, Transparency 74, Manufacturing 72, Safety 68, Sustainability 60. Scored as of 2026-08-24.
Why did Ultimate Ashwagandha - KSM-66 score in the Verified tier?
KSM-66 is Ixoreal Biomed's clinically-validated ashwagandha extract standardized to 5% withanolides. This exact extract has multiple positive RCTs for cortisol reduction and perceived stress (Chandrasekhar 2012 for cortisol; Salve 2019). Named branded extract at the studied form. Sits at solid Verified. Would move to Elite with a 600mg/day serving spec explicitly matching the RCT dose and clear thyroid-monitoring safety guidance for autoimmune-thyroid patients.
What are the strongest and weakest aspects of this product?
Strongest: Evidence at 78/100 (quality of published RCT support for the active ingredients at the label dose) and Formulation at 76/100 (dose adequacy, bioavailability form, and ingredient redundancy). Weakest: Safety at 68/100 (adverse-event profile, interaction risk, and dose ceiling) and Sustainability at 60/100 (sourcing practices, packaging, and corporate practice). All six dimensions feed the overall Vyvata score; a weakness on any one dimension pulls the overall down proportionally.
Is Ultimate Ashwagandha - KSM-66 third-party tested?
No third-party certifications (NSF, USP, ConsumerLab, or equivalent) were on record at the time of scoring. This affects the Manufacturing dimension score. The manufacturer may test internally or have obtained certification more recently — check the current product label for the most up-to-date information.
What would move Ultimate Ashwagandha - KSM-66 to a higher tier?
Would move to Elite with a 600mg/day serving spec explicitly matching the RCT dose and clear thyroid-monitoring safety guidance for autoimmune-thyroid patients.
Are there higher-scoring alternatives to Ultimate Ashwagandha - KSM-66?
The top-ranked stress, mood & mental wellness product in the Vyvata catalog is currently Momentous Sleep at 77/100. See the full ranked list of 247 scored products in this subcategory at https://vyvata.com/pages/best-stress-mood-and-mental-wellness-supplements-ranked.
What does the Vyvata score mean?
The Vyvata Scoring Framework rates every listed product 0–100 across six dimensions: Evidence, Formulation, Manufacturing, Safety, Transparency, and Sustainability. Tier bands: Elite 85–100 (top-tier evidence + formulation + manufacturing), Verified 70–84 (strong on most dimensions), Standard 50–69 (solid but with weaknesses called out), Rejected 0–49 (specific failures documented). Rejected products remain listed with reasons. Full methodology at https://vyvata.com/pages/methodology.
Where can I read customer reviews for Ultimate Ashwagandha - KSM-66?
The Vyvata score measures product integrity against a published rubric, not customer sentiment. For customer reviews and community discussion, search external platforms directly: Amazon (https://www.amazon.com/s?k=Ultimate%20Ashwagandha%20-%20KSM-66),Google(https://www.google.com/search?q=Ultimate%20Ashwagandha%20-%20KSM-66+reviews),Reddit(https://www.reddit.com/search/?q=Ultimate%20Ashwagandha%20-%20KSM-66%20review),andTrustpilot(https://www.trustpilot.com/search?query=Ultimate%20Ashwagandha%20-%20KSM-66).Vyvatadoesnotaggregate,republish,orlicensethosethird-partyreviews.
Customer reviews
Reviews on other platforms
The Vyvata score measures product integrity against a published rubric, not customer sentiment. Vyvata does not aggregate, republish, or license third-party reviews — the links below open search pages on their respective platforms.
All the data we have on this product
Every VSF-related metafield surfaced verbatim. Nothing hidden. If you spot data that looks wrong, let us know.
- VSF score
- 74 / 100
- Tier
- Verified
- Category
- Supplements
- Subcategory
- stress mood mental
- Last scored
- Third-party certifications
- None on record at time of scoring
- Vendor
- Swanson Vitamins
- Tags
- Shopify Collective, Swanson Vitamins
Every score is set from the published rubric, audit-logged, and rescored whenever new evidence emerges (published trials, updated labels, third-party testing releases). Every vendor is scored on the same criteria — no pay-to-play. See our editorial-independence disclosure for the full policy, including brands with an editorial relationship to this site.
Share
