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Proprietary blend: what the supplement label is allowed to hide

Quick answer

A proprietary blend is a group of ingredients listed under one name with a single total weight. Federal labeling rules require the ingredients in order from most to least by weight, but they do not require the amount of each one. You can sometimes estimate the parts from the rest of the panel.

Written by the Jellutide label deskUpdated October 18, 2026 · 4 min read

The Jellutide Supplement Facts panel: 1 gummy, 30 servings, 8 calories, 2 g sugars and a 525 mg proprietary blend of apple cider vinegar and BHB salts — The Jellutide Supplement Facts panel. The 525 mg proprietary blend is the line with two names under it.

The basics01

What is a proprietary blend on a supplement label?

A proprietary blend is a set of ingredients printed under one blend name, with one weight for the whole group. The weight tells you the total, not the share of each ingredient.

The rule behind it is 21 CFR 101.36. It says the blend's ingredients are listed in descending order of predominance by weight, indented under the blend name. The amount shown is the combined weight of everything in the blend (21 CFR 101.36).

So the order is a real clue, but the rule does not require the amount of each single ingredient (21 CFR 101.36).

Shown and hidden02

What can a proprietary blend hide?

It can hide how much of each ingredient you get.

That matters because research is done at set amounts. If you cannot see the amount, you cannot compare it with a study.

What the blend rule requires and what it leaves out (21 CFR 101.36).
Label detail	Shown?
Name of the blend	Yes
Total weight of the blend	Yes
Ingredients in order, heaviest first	Yes
Amount of each single ingredient	Not required

Worked example03

How can you estimate what is inside a blend?

Use the order and the rest of the panel. The Jellutide label is a good practice case: a 525 mg blend of apple cider vinegar and BHB calcium, magnesium and sodium salts.

Vinegar is listed first, so it outweighs the salts. The panel also prints calcium 1 mg, magnesium 0.75 mg and sodium 2.5 mg. If every milligram came from the salts, they would weigh at most about 6.1 + 7.1 + 13.7 = about 27 mg.

Sodium citrate adds some sodium too, so the true figure is lower. That leaves about 498 mg or more of the 525 mg for the vinegar. These are estimates, because label values are rounded.

Apple cider vinegar
3.5% of the low end

1 gummy, upper limit (whole blend)525 mg
1 gummy, likely (blend minus BHB salts)498 mg
Vinegar drunk daily in a 12-week trial (15-30 mL)15,000-30,000 mg
Printed: first in a 525 mg blend. Liquid vinegar weighs about 1 g per mL; the label does not say if this is liquid or powder. (Kondo 2009, vinegar trial)
BHB salts
0.2% of the low end

1 gummy, upper limit from the mineral lines27 mg
Ketone salts per dose in human studies (grams)12,000-24,000 mg
Not printed: worked out from calcium 1 mg, magnesium 0.75 mg and sodium 2.5 mg. (Stubbs 2017, Front Physiol)

Berry bars: what one gummy can hold, worked out from the label (the blend total, its order and the mineral lines). Green bars: daily or single-dose amounts used in human studies; the light extension shows the range. No study has tested Jellutide itself.

The label does not say whether the vinegar is liquid or powder. Tablets sold as apple cider vinegar have varied widely in acid content (Hill 2005, ACV tablets). See the apple cider vinegar page.

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Fair view04

Are proprietary blends always a bad sign?

No. A blend is legal and common, and a short one is easier to judge than a long one. But hidden amounts make a claim harder to check, so the burden stays on the brand.

Two tilted Jellutide bottles full of red berry gummies — Brand render of two bottles. The red gummies are the product; the blend is inside them.

A fair test: can the label alone tell you if the amount matches the research? If not, treat any benefit claim as unproven. The FTC expects health claims to rest on rigorous human testing (FTC, Health Products Guidance).

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Your checklist05

How do you read a proprietary blend before you buy?

Read the order, check the total, and look for panel lines that cap an ingredient.

Our supplement facts page reads the whole Jellutide label this way. Keep taking prescribed medicine as directed.

FAQ06

Proprietary blend questions

Why do supplement companies use proprietary blends?

The rule allows it: only the blend total and the order of ingredients must be shown, not each amount (21 CFR 101.36). You cannot compare any single ingredient with a study dose.

Is the first ingredient in a blend the largest?

Yes. Blend ingredients must be listed in descending order of predominance by weight (21 CFR 101.36). The first name weighs the most and the last the least.

Does a 525 mg blend total mean 525 mg of each ingredient?

No. The amount shown is the combined weight of everything in the blend (21 CFR 101.36). In the Jellutide blend, the vinegar takes most of the 525 mg and the BHB salts a small part.

Who wrote this07

Written and reviewed by

Written byThe Jellutide label deskGojellutide, USA authorized Jellutide retailer

Pages built from the bottle label, the sales page and linked NIH, FDA, CDC, FTC and peer-reviewed sources.

Medically reviewed byDr. Richard Kowalsky, MD, PhysicianRole: Medical reviewerReview date: October 19, 2026

Last updated October 18, 2026. Read our editorial standards and how we check reviews. This website is run by a USA authorized Jellutide retailer, not by the manufacturer or the distributor. We earn money when you buy through our order links.

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