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What A Proprietary Blend Is, What It Is For, And Who It Serves

By The Mindsaves Editorial Desk · Reviewed September 19, 2026 · 7 min read · Reading a label

Two words on a Supplement Facts panel can pool six ingredients into a single figure. The subsection that allows it runs to a few lines, it was written on purpose, and it was written for a real interest. Knowing whose changes how a blend line reads.

Why a panel prints amounts in the first place

A Supplement Facts panel is not a marketing surface that happens to carry numbers. It is a prescribed format, and the numbers are the reason it exists.

The rule is 21 CFR 101.36, and the clause that does the work is 101.36(b)(3)(ii): the panel must carry the quantitative amount by weight, per serving, of every dietary ingredient that is not one of the listed nutrients. The listed nutrients, the vitamins and minerals with a Daily Value, sit in the upper block with their percentages beside them. Everything else sits below a heavier rule, in a second block, with its weight printed.

So disclosure is the default setting of the document. A panel that prints a figure beside every name is doing the ordinary thing, and it is doing it because somebody has to be able to add two products together, hand a bottle to a pharmacist, or look up what a published trial used and see how the two compare.

That is worth saying plainly before anything else, because it is the fact that decides how to read this particular product. The MindSave sales page shows no Supplement Facts panel at all and prints no amount for any of the eight names it lists. The printed panel on the bottle is a different document governed by the rule above, which is why the figures reach a buyer in the box even though they did not reach them before the sale.

What 101.36(c) lets a blend pool, and what it does not

The exception lives one subsection further down. Section 101.36(c) allows a group of dietary ingredients to be declared as a proprietary blend, and inside that group the individual amounts may be left out. Three obligations survive, and they are the ones worth memorising.

Drawn from the text of 21 CFR 101.36 rather than from any particular bottle. It describes what the format demands of whoever fills it in.

Read the right-hand column again, because the popular version of this is that a blend hides everything. It does not. It hides one thing, the split, and it is required to publish the names, the order and the total. A blend line that carries no total at all is not a proprietary blend under this rule; it is a panel with a piece missing.

Who the exception was written for

Supplements are made by a small number of contract manufacturers and sold under a very large number of brands. A brand that has spent two years and a consultant's fee arriving at a ratio owns that ratio and very little else: there is no patent on a mixture of common ingredients, and the recipe is the asset.

Print every figure on the panel and the asset is public. Anyone can photograph the back of the bottle, hand it to the same contract manufacturer and have a copy on sale in a season. The blend provision is trade-secret protection written into food labelling, and that is a real interest rather than a trick.

The same line has a second use, and an honest page says so in the same breath. Because only the total is published, a blend may be led by a name with a large reputation and a small share of the weight. Nothing on the panel distinguishes that case from a formula where the leading name carries most of the total. The rule serves the careful formulator and the careless one identically, which is why the reader has to do a little work.

The arithmetic a blend line still allows

Here is the part almost nobody does, and it takes ten seconds. Take a made-up blend, because this is a method rather than a claim about any product: six names on one line, 500 mg declared as the total.

Descending order means the first name weighs at least as much as the second, the second at least as much as the third, and so on. If the first name were less than a sixth of the total, every name behind it would be smaller still and the six could not add up to 500 mg. So the first name is at least 83 mg. Run the same logic from the other end and the last name is at most 83 mg, because if it were larger every name in front of it would be larger too.

An illustration with invented figures, used to show how the bounds are derived. It is not a description of any bottle sold on this website.

Those bounds are loose, and they are still useful. If a published trial of the leading name used 300 mg a day and the whole blend weighs 500 mg across six names, the blend may or may not reach it. If the same trial used 300 mg and the whole blend weighs 150 mg, the question is settled and no further information is needed.

That is the real skill a blend line asks for. Not indignation, arithmetic.

Where this product sits

MindSave names eight ingredients on the seller’s page: niacin as niacinamide, vitamin B6, GABA, L-tyrosine, bacopa monnieri, alpha GPC, phosphatidylserine and huperzine A. The sales page prints no amount for any of them and shows no panel, so this desk cannot tell you whether the printed panel pools anything into a blend or prints eight separate rows. Both are lawful and only the bottle answers it.

What can be said without seeing it is the thing this whole post has been building to. The figures exist. 21 CFR 101.36 requires them on the printed panel, the panel travels inside the carton, and the buyer has them in hand on the day the parcel lands. The seller’s decision was about when, not about whether.

One complication belongs here rather than in a footnote. A third piece of the same seller’s artwork does carry a full Supplement Facts panel, complete with a proprietary blend line, and it names a different formula from the eight above, including a stimulant. This desk cannot resolve which artwork matches the bottle now shipping and will not pretend to. It is set out in full in the piece on the two published lists, and the short version is that reading the panel on your own bottle is not a formality on this product.

Three questions a blend line cannot stop you answering

A pooled figure closes one door and leaves several open. These three are worth more to most buyers than the split would be.

1. Is anything on this line already in my cupboard? Names are published whether or not amounts are, so overlap is always checkable. A multivitamin, a B-complex and a focus formula can carry the same nutrient three times over.
2. Does anything named here have a published upper limit? Two nutrients on this shelf do. Supplemental niacin has a tolerable upper intake level of 35 mg a day for adults, and vitamin B6 has one of 100 mg a day counting food and supplements together. Those limits belong to the nutrients and apply whatever bottle they arrive in.
3. Is anything here worth raising before I start? A name is enough to ask the question. Supplements and medicines taken together can amplify, blunt or complicate each other, and the conversation starts from a list rather than from a set of figures.

None of those three needs the split. All three are easier with the bottle in front of you, which is the argument for opening the carton and reading the panel before the first capsule rather than after the tenth. The label page on this website sets out what the panel carries, and the arrival checklist turns it into a sixty-second job.