MRI Performance Zinc (60 Count)

Six-dimension breakdown

Why this scored 62/100

MRI Performance Zinc is a single-ingredient zinc capsule from an established sports-nutrition brand with practitioner and NPC-federation ties dating back to the late 1990s. Zinc itself is one of the best-characterized essential trace minerals — required for over 300 enzymatic reactions, well-studied for immune function, testosterone-adjacent enzyme cofactor status, wound healing, and taste/smell perception. Baseline RDA is 8-11mg/day and typical supplement doses of 15-30mg are safe for daily use, with upper tolerable intake at 40mg/day. The product loses points because MRI does not publish the exact zinc form (picolinate, bisglycinate chelate, gluconate, oxide — bioavailability varies materially) in the title-level metadata, and there is no per-lot certificate of analysis linked from the product page. Zinc taken chronically at higher doses without compensating copper can induce copper deficiency and anemia, and MRI does not co-formulate copper here. Sports positioning implies performance/testosterone benefits that zinc only supports when the user is actually deficient — a nuance the marketing does not fully convey. Standard tier reflects a real single-nutrient supplement from a real brand at a reasonable dose, but not a premium-tier formulation with disclosed form, third-party testing, or copper balance.

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

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

immune antioxidants

Last scored

August 30, 2026

Third-party certifications

None on record at time of scoring

Vendor

MRI Performance

Product type

Vitamin

Tags

MRI Performance, 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.