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LongJax Eurycoma Longifolia Jack Extract
LongJax Eurycoma Longifolia Jack Extract
No reviews
No reviews
Regular price
$13.95 USD
Regular price
$27.89 USD
Sale price
$13.95 USD
Shipping calculated at checkout.
Quantity
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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 →
64/100
Standard
Six-dimension breakdown
Evidence
65
Formulation
68
Manufacturing
62
Safety
60
Transparency
65
Sustainability
55
Why this scored 64/100
Tongkat ali (Eurycoma longifolia) as the branded LongJax 20:1 extract — a defined, standardized raw. Human data supports modest testosterone and stress-cortisol modulation at 200–400 mg/day of standardized root extract (Talbott 2013; Tambi 2012). LongJax is a documented ingredient brand, which is what pushes this above generic tongkat SKUs. Would move to Verified 70+ with eurypeptide/quassinoid percentage disclosed and third-party heavy-metal COA (a real issue for Malaysian root sourcing).
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 LongJax Eurycoma Longifolia Jack Extract?
LongJax Eurycoma Longifolia Jack Extract, categorized under Men's health 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 LongJax Eurycoma Longifolia Jack Extract score on the Vyvata rubric?
64/100 overall — Standard tier (50–69 band). Per-dimension breakdown: Formulation 68, Evidence 65, Transparency 65, Manufacturing 62, Safety 60, Sustainability 55. Scored as of 2026-08-24.
Why did LongJax Eurycoma Longifolia Jack Extract score in the Standard tier?
Tongkat ali (Eurycoma longifolia) as the branded LongJax 20:1 extract — a defined, standardized raw. Human data supports modest testosterone and stress-cortisol modulation at 200–400 mg/day of standardized root extract (Talbott 2013; Tambi 2012). LongJax is a documented ingredient brand, which is what pushes this above generic tongkat SKUs. Would move to Verified 70+ with eurypeptide/quassinoid percentage disclosed and third-party heavy-metal COA (a real issue for Malaysian root sourcing).
What are the strongest and weakest aspects of this product?
Strongest: Formulation at 68/100 (dose adequacy, bioavailability form, and ingredient redundancy) and Evidence at 65/100 (quality of published RCT support for the active ingredients at the label dose). Weakest: Safety at 60/100 (adverse-event profile, interaction risk, and dose ceiling) and Sustainability at 55/100 (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 LongJax Eurycoma Longifolia Jack Extract 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 LongJax Eurycoma Longifolia Jack Extract to a higher tier?
Would move to Verified 70+ with eurypeptide/quassinoid percentage disclosed and third-party heavy-metal COA (a real issue for Malaysian root sourcing).
Are there higher-scoring alternatives to LongJax Eurycoma Longifolia Jack Extract?
The top-ranked men's health product in the Vyvata catalog is currently Ritual Essential for Men 18+ at 72/100. See the full ranked list of 156 scored products in this subcategory at https://vyvata.com/pages/best-men-s-health-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 LongJax Eurycoma Longifolia Jack Extract?
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=LongJax%20Eurycoma%20Longifolia%20Jack%20Extract),Google(https://www.google.com/search?q=LongJax%20Eurycoma%20Longifolia%20Jack%20Extract+reviews),Reddit(https://www.reddit.com/search/?q=LongJax%20Eurycoma%20Longifolia%20Jack%20Extract%20review),andTrustpilot(https://www.trustpilot.com/search?query=LongJax%20Eurycoma%20Longifolia%20Jack%20Extract).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
- 64 / 100
- Tier
- Standard
- Category
- Supplements
- Subcategory
- mens health
- 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.
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