Optimum Nutrition
THE BIOHACKING STANDARD
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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 →
Six Star is Iovate's budget bodybuilder sub-brand (Iovate is a Chinese-owned conglomerate per our brand-owner disclosure), and the 'Testosterone Booster' typically pairs a low-dose fenugreek/rhodiola/boron mix with aggressive 'clinically dosed' marketing language that outruns the evidence for the actual per-actives on-label. The 'booster' framing plus advertised percent-testosterone-increase claims cross into unverified_medical_claim territory when read against the underlying data. Six Star's manufacturing is FDA-registered but budget-tier, with limited third-party testing disclosure. Would need dose-honest label claims and named-source standardized actives (Testofen 600mg, Physta 200mg) to move above Rejected.
Auto-fail rule triggered: Unverified medical claim.
A specific medical or physiological benefit claim on the label or marketing is not supported by published clinical evidence in humans. Distinct from disease claims — this covers narrower physiological claims (e.g. 'increases NAD+ by X%', 'boosts immunity') without published RCT support at the actual product dose and formulation. See the full rubric →
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.
Auto-generated from Vyvata's scoring data for this product. For general questions about the store (shipping, returns, wholesale), see the site FAQ.
Six Star Protein Testosterone Booster Caplets 60Ct, 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.
42/100 overall — Rejected tier (0–49 band). Per-dimension breakdown: Manufacturing 48, Safety 48, Formulation 45, Sustainability 42, Transparency 40, Evidence 38. Scored as of 2026-08-24.
Six Star is Iovate's budget bodybuilder sub-brand (Iovate is a Chinese-owned conglomerate per our brand-owner disclosure), and the 'Testosterone Booster' typically pairs a low-dose fenugreek/rhodiola/boron mix with aggressive 'clinically dosed' marketing language that outruns the evidence for the actual per-actives on-label. The 'booster' framing plus advertised percent-testosterone-increase claims cross into unverified_medical_claim territory when read against the underlying data. Six Star's manufacturing is FDA-registered but budget-tier, with limited third-party testing disclosure. Would need dose-honest label claims and named-source standardized actives (Testofen 600mg, Physta 200mg) to move above Rejected.
Strongest: Manufacturing at 48/100 (third-party testing, GMP compliance, and facility audit status) and Safety at 48/100 (adverse-event profile, interaction risk, and dose ceiling). Weakest: Transparency at 40/100 (dose disclosure vs proprietary blends, and honesty of marketing claims) and Evidence at 38/100 (quality of published RCT support for the active ingredients at the label dose). All six dimensions feed the overall Vyvata score; a weakness on any one dimension pulls the overall down proportionally.
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.
This product triggered the Vyvata auto-fail rule "unverified_medical_claim", which places it in the Rejected tier regardless of its scores on other dimensions. See the full explanation above and the methodology page for the current list of auto-fail rules.
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.
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.
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=Six%20Star%20Protein%20Testosterone%20Booster%20%20Caplets%2060Ct),Google(https://www.google.com/search?q=Six%20Star%20Protein%20Testosterone%20Booster%20%20Caplets%2060Ct+reviews),Reddit(https://www.reddit.com/search/?q=Six%20Star%20Protein%20Testosterone%20Booster%20%20Caplets%2060Ct%20review),andTrustpilot(https://www.trustpilot.com/search?query=Six%20Star%20Protein%20Testosterone%20Booster%20%20Caplets%2060Ct).Vyvatadoesnotaggregate,republish,orlicensethosethird-partyreviews.
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.
Every VSF-related metafield surfaced verbatim. Nothing hidden. If you spot data that looks wrong, let us know.
unverified_medical_claimEvery 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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