Optimum Nutrition
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Grass-Fed Hydrolyzed Collagen Peptides
Grass-Fed Hydrolyzed Collagen Peptides
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Regular price
$25.99 USD
Regular price
$33.99 USD
Sale price
$25.99 USD
Shipping calculated at checkout.
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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 →
62/100
Standard
Six-dimension breakdown
Evidence
62
Formulation
65
Manufacturing
60
Safety
65
Transparency
58
Sustainability
52
Why this scored 62/100
Unflavored version of Muscle Faktor's grass-fed hydrolyzed collagen. Same evidence base (Proksch 2014 skin; Zdzieblik 2017 tendon; Clark 2008 joint) at 10–15 g/day. Unflavored gets a small formulation and transparency credit over flavored variants because it is easier to identify freshness and there is no added sweetener or masking. Grass-fed sourcing modestly improves sustainability. Molecular weight / dipeptide profile still undisclosed, which caps the score below Verified.
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
- 62 / 100
- Tier
- Standard
- Category
- Supplements
- Subcategory
- gut digestive
- Last scored
- Third-party certifications
- None on record at time of scoring
- Vendor
- Muscle Faktor
- Product type
- Proteins & Blends
- Tags
- Muscle Faktor, 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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