How We Evaluate

Last updated: September 5, 2026

Every product review on NutrasInsights follows the same evaluation process, so a reader can compare products across categories with a consistent methodology.

What we start from

We capture the manufacturer's own label and sales-page claims directly from their site: ingredients, disclosed doses, serving size, guarantee terms, and manufacturing details. We never invent a spec or a claim the vendor doesn't make.

The rubric

Each product is weighed against five criteria:

• Ingredient evidence at label dose (35%): for every key ingredient, we check the peer-reviewed literature (typically PubMed) for the dose used in published research, then compare it against what the label actually contains. An ingredient with real research behind it still loses points here if the label dose falls well short of the studied dose.
• Label transparency (20%): whether every ingredient dose is disclosed, or hidden inside a "proprietary blend" that only lists a combined total.
• Value per serving (20%): price per serving against comparable formulas in the same category, at the vendor's own listed pricing.
• Manufacturer trust signals (15%): GMP certification, a named manufacturing facility, a working refund/guarantee policy, and reachable customer support.
• Claim veracity of the sales page (10%): whether marketing claims — customer counts, ratings widgets, urgency countdowns, unsourced statistics — can be verified independently, or are flagged as unverifiable.

Why we never publish a numeric score

We compute an internal weighted score to keep every review consistent, but we don't publish that number anywhere on the site. A single digit invites a false sense of precision and tends to get compared out of context (a 3.2 on one site vs. a 4-star average built from a different method). Instead, every review closes with a written Verdict that says plainly what the product earns and who it's actually a good fit for.

What we will never claim

We don't make cure, treatment, or disease claims for any product, and we don't repeat a vendor's cure/treatment claim as fact — supplements support normal structure or function of the body, and that is the only kind of claim you'll find stated as true on this site. Every efficacy claim we make links to the specific study behind it.