MRI Performance Glutamine 1000G

Six-dimension breakdown

Why this scored 58/100

L-glutamine is the most abundant free amino acid in human plasma and skeletal muscle, and it is a conditionally essential amino acid — becoming genuinely essential during severe catabolic stress (major surgery, sepsis, burns), where clinical enteral or parenteral glutamine supplementation has evidence for reduced infections and shorter ICU stays. In the general sports-nutrition context, however, oral glutamine's story is much weaker: healthy trained athletes with adequate protein intake show minimal-to-no benefit for muscle protein synthesis, recovery, or immune function from adding oral glutamine on top of a normal high-protein diet. Glutamine's utility in gut-lining support (leaky gut, IBD) is more promising, and it is often recommended at 5-10g/day for gut integrity in functional-medicine contexts. MRI Performance Glutamine at 1000g (2.2 lb bulk powder) is a real single-ingredient product at a fair price. Standard tier: legitimate but not category-leading — the supplement itself is honest, but the underlying evidence for the sports-recovery framing is weak in trained athletes.

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

58 / 100

Tier

Standard

Category

Supplements

Subcategory

protein amino acids

Last scored

August 30, 2026

Third-party certifications

None on record at time of scoring

Vendor

MRI Performance

Product type

Glutamine

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.