Optimum Nutrition
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NutraKey Tribulus Terrestris 1000mg, 100 Capsules
NutraKey Tribulus Terrestris 1000mg, 100 Capsules
No reviews
No reviews
Regular price
$12.99 USD
Regular price
$14.99 USD
Sale price
$12.99 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 →
40/100
Rejected
Six-dimension breakdown
Evidence
35
Formulation
50
Manufacturing
55
Safety
60
Transparency
55
Sustainability
55
Why this scored 40/100
NutraKey Tribulus Terrestris at 1,000 mg per cap is a high-dose single-ingredient Tribulus product — same evidence problem as the Puritan's Pride SKU: Neychev 2016 systematic review found NO T-boost in healthy men. Higher dose does not rescue an ingredient whose primary marketed mechanism has been meta-analytically disproven. Single-ingredient format and clear dose disclosure are transparency positives, but do not offset the fundamental evidence gap. Saponin % standardization (Tribulus's flagship active is protodioscin, typically standardized to 40-90% saponins) is not disclosed. Autofailed under unverified_medical_claim for T-boost marketing without support. Would move to Standard 55+ if positioned honestly as libido-support only, with no T-claim, and saponin standardization disclosed.
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.
FAQ data has not been generated for this product yet. See the site FAQ for general questions.
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
- 40 / 100
- Tier
- Rejected
- Category
- Supplements
- Subcategory
- mens health
- Last scored
- Third-party certifications
- None on record at time of scoring
- Vendor
- PoorBoySupplements.com
- Product type
- Vitamins | Herbs
- Tags
- PoorBoySupplements.com, Shopify Collective
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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