New Fitness Supplements — independent supplement ratings

A ratings desk for a category that has spent thirty years grading its own homework.

The standing question

Is it dosed like the research, or dosed like the marketing?

We score every product on one public scale — what is in it, at what dose, what buyers actually report, and what a serving costs. Brands can buy a labelled slot on this site. Not a single one has ever been able to buy a rank.

The categories

Five, rated end to end
NFS Awards

The best supplements of 2026

All 2026 winners →

Best magnesium supplements

Rated on one public scale

Label Dose Checker

The tool this site is built around

Pick a product and we line up every active ingredient against the dose used in published trials. Under, at, or over — no interpretation needed. In the testosterone category, most products fail on the first ingredient.

Label figures are read off each product's own Supplement Facts panel; the studied range is the dose used in the research we cite in that product's review. The bar runs from 0 to the top of that range, and the vertical mark is where it begins. Educational only — not medical advice.

From the desk

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