Proprietary Blends: What You Can and Cannot Verify
Understand what a total blend weight reveals, which individual amounts may remain hidden and how to compare without inventing precision.
Four signals worth checking first
Blend total
Capture the total declared weight and unit exactly.
Ingredient order
Preserve the label order without turning it into exact quantities.
Unknown amounts
Each undisclosed component remains unknown.
Comparison limit
Avoid dose or value claims that require missing individual amounts.
A label checkpoint for side-by-side research
| Field | Question | Why it matters |
|---|---|---|
| Blend name | What exact proprietary or descriptive name is used? | It identifies the declared grouping. |
| Total weight | What is the combined amount per serving? | It constrains the total but not each component. |
| Ingredient order | What sequence appears under the blend? | FDA guidance requires descending predominance by weight for these ingredients. |
| Individual amounts | Are any component quantities stated? | Hidden amounts block precise dose-to-evidence comparison. |
| Serving size | How many physical units make the blend amount? | It keeps multi-capsule servings visible. |
Turn the package into comparable fields.
Enter only what the current label declares. Unknowns stay visible.
What the evidence can—and cannot—tell you
FDA defines the presentation
FDA guidance says a proprietary blend lists its total weight and its other dietary ingredients in descending order by weight.
Read FDA labeling guide ↗A total is not individual precision
The disclosed total cannot establish the exact amount of every component. NutraFavorites records those component values as unknown.
Read FDA compliance guide ↗Evidence still needs form and amount context
Ingredient research should not be mapped to a commercial blend when the relevant form or amount cannot be verified.
Read NutraFavorites evidence method ↗Ready for useful product picks—not placeholder rankings.
Future product cards can live here once NutraFavorites has verified the current label, merchant, price timestamp, ingredient fields and score inputs. A commercial relationship will never improve the rank.
A five-point research checklist
- Record total blend weight and serving size.
- Preserve ingredient order exactly as shown.
- Mark undisclosed individual amounts unknown.
- Do not estimate equal shares or minimum effective doses.
- Explain which score dimensions cannot be verified.
FAQ
Can ingredient order reveal exact amounts?
No. It supplies order by weight, not the quantity of each component.
Should a blend automatically receive zero?
Not automatically. It should receive credit only where evidence exists; missing component amounts reduce coverage and confidence rather than becoming invented zeros.
Can two blends be compared by total weight?
Only as total blend weights. That does not make their ingredients, forms or individual amounts equivalent.