Proprietary Blends, Explained: What The 661mg Doesn't Tell You
Neurapezil names all 19 compounds in its proprietary blend — but the 661mg total weight doesn't tell you how much of any single one you're actually getting.
Understanding this labeling format helps set realistic expectations for what you can and can't verify before you buy.
What a proprietary blend is
Under FDA dietary supplement labeling rules, a manufacturer can combine several ingredients into a single "proprietary blend" and disclose the combined weight and the names of every ingredient inside it, without breaking out how much of each individual compound is present. This is legal and common across the supplement industry — but it is a real transparency gap for consumers who want to compare against clinical research.
Why this matters for dosage comparison
Published research on ingredients like Bacopa Monnieri or Huperzine A typically uses specific milligram doses. Without knowing how much of Neurapezil's 661mg blend is Bacopa versus how much is Boron Citrate, for example, it's not possible to confirm whether any single ingredient is present at a research-backed level.
The vitamin panel is different
Neurapezil's 21-part vitamin and mineral panel is fully dosed — each with a specific milligram or microgram amount and percent daily value. This is a meaningfully more transparent structure than the blend, and worth crediting separately.
Applying this to Neurapezil
See our full ingredient breakdown for both label layers side by side, and our piece on Vinpocetine and the FDA safety note for the one blend ingredient that needs standalone attention regardless of dose.
