Why Transparent Labels Matter: Proprietary Blends Explained
A 'proprietary blend' on a supplement label lists ingredients without disclosing exact milligram amounts for each one.
This single labeling choice affects how confidently you can evaluate whether a formula actually matches the doses used in published research.
What a proprietary blend actually hides
When a label lists a “proprietary blend” followed by several ingredient names and a single combined weight, you know the total amount of all ingredients together, but not how much of any individual ingredient is actually present. A formula could be 90% one cheap filler ingredient and 10% everything else, and the label would look identical to one with a more balanced, effective mix.
Why this matters for effectiveness
Published research on ingredients like L-Arginine, Zinc, or Tongkat Ali typically studies specific dose ranges. If a proprietary blend doesn't disclose amounts, you have no way to know whether the formula you're buying contains doses anywhere near what was actually studied, or a token amount included mainly for the ingredient list.
What transparent labeling does not guarantee
Even fully transparent labeling has limits. Knowing the exact milligram amount of an ingredient doesn't guarantee it matches a specific published study's dose exactly, and it doesn't verify batch-to-batch potency without an independent Certificate of Analysis. Transparency is necessary but not sufficient on its own.
The bigger picture: verification beyond the label
A publicly available third-party Certificate of Analysis, confirming that a specific batch actually contains the ingredients and amounts stated, is the next level of verification beyond simply avoiding proprietary blends. Its absence doesn't necessarily mean a problem, but its presence would meaningfully strengthen confidence.
Applying this to Vigortrix
Vigortrix uses transparent, individually named labeling for all nine ingredients, which is a genuine point in its favor relative to formulas using vague proprietary blends. See our piece on nitric oxide and vascular health for how two of those named ingredients specifically work.
