Proprietary blends: what ‘amino blend’ on a label actually hides

By Aali Qureshi, founder of Deadly Company · Published October 24, 2026 · Updated October 31, 2026

Short answer: A proprietary blend lists ingredients in descending weight order under one combined weight, so each ingredient’s dose is undisclosed. On an amino label that hides the two numbers the purchase turns on, total EAAs and leucine, leaving the ~2.5–3g trigger unverifiable. Muscle Water Aminos prints every amount, 16g of EAAs, 4g of leucine and 3.5g of creatine, and helps preserve lean muscle when paired with resistance training and adequate protein.

> Key takeaways > – A blend gives you one combined weight for many ingredients: you’re told the truck’s weight, never the cargo. Order is disclosed. Dose is not. > – The exhibits are ordinary labels, not outliers: one product pairs 5g of disclosed creatine with only a 2g proprietary EAA blend; another discloses 5g of BCAAs and then blends the other 5g; a third discloses zero grams for any amino it sells. > – Disclosure is demonstrably a choice: other brands in the same category print full per-ingredient amounts, including a 12g EAA product with its 4g of leucine disclosed. The law permits the blend. It does not require it. > – On a GLP-1 this matters most: muscle building switches on at roughly 2.5–3g of leucine per feeding — about the leucine in five eggs at once — and from a blend, leucine could sit anywhere in the order, at any amount. You cannot verify the one crossing your muscle is counting on.

The label that answers every question except yours

There’s a particular frustration in reading a supplement label carefully — doing the thing you were told responsible buyers do — and arriving at the one number you came for, only to find it isn’t there.

Not small. Not footnoted. Absent. Behind two polite words: amino blend.

I read labels for a living. That one still stops me.

The label isn’t lying to you. It’s doing something quieter: it’s telling you everything except the dose, and the dose was the question.

For a GLP-1 user, the question isn’t academic. Appetite is suppressed by design, the daily protein target still runs to 1.2–1.6g per kg of body weight — at 180 lb, roughly a chicken breast’s worth of protein at every meal — and the meals aren’t happening the way they used to. So the amino serving gets bought to do a specific, checkable job. A blend makes it uncheckable.

This article is about what the blend structure itself does, shown on real labels. The enemy here is a labelling practice — never the people who bought under it, and never a brand’s right to use a format the law allows. It’s about what that format costs you in information.

What a blend actually is, in one paragraph

Under a proprietary blend, a group of ingredients is listed together under a single combined weight, in descending order by weight. That’s the whole disclosure: the group’s total, and the ranking inside it.

The first ingredient is the heaviest in the group. The last is the lightest. How many milligrams of each? Legally secret.

An ingredient can sit in that list at a full, meaningful dose, or at a token amount included so its name can appear on the panel — and the label you’re holding cannot distinguish between those two products. Same truck weight. Entirely different cargo.

Every exhibit below is that single mechanism, wearing three different labels.

Three labels, read closely

Product	What is disclosed	What is hidden	Leucine verifiable?
PerfectAmino + Creatine (BodyHealth)	Creatine: 5g, printed — a real dose at the top of the 3–5g research range, and more creatine than our own serving carries	The entire essential amino acid content sits in a 2g proprietary EAA blend; every individual amino amount, leucine included	No
GNC Essential Amino Complete	5g of BCAAs, with leucine at 2.5g — the very bottom of the ~2.5–3g trigger range	A further 5g rides as a proprietary EAA blend, amounts undisclosed	Partly — the disclosed BCAA half prints leucine at 2.5g; the blended half discloses nothing
Strength Cartel Big Boy Amino	No grams for any amino; the label offers a “2:1:1” ratio instead of a dose	Every amino amount, across two proprietary blends — zero disclosed grams for any amino in the product	No

Start with the first one, because it shows the split personality a label can have. PerfectAmino + Creatine discloses its creatine honestly — 5g, printed, credit where due. Beside it, the product’s entire essential amino acid content is that 2g proprietary blend (mining bank, Part 8, October 2026). That 2g is one eighth of a 16g full serving. How much of it is leucine? The label cannot say. Read closely, this is a creatine product with a token EAA addition whose dose is structurally unknowable, sold under an amino name. The full teardown of that label is in Perfect Amino’s label, decoded.

The GNC label splits the difference, which makes it the most instructive of the three. Half the product can be checked; half cannot, and the checkable half’s leucine sits exactly at the line with nothing to spare.

One caveat, printed because our own standard requires it: this label record is a 2020-era NIH label-database record, and a live US listing for the product was not found in the October 2026 mining pass — the product may be discontinued. The blend structure it documents is not discontinued at all. It’s on shelves everywhere, which is why the exhibit stands, dated for what it is.

Then there’s the third label. Two blends, zero disclosed grams, and a ratio doing the work a dose should do. A ratio describes proportions, not amounts: 2:1:1 of an undisclosed total is a shape with no size. There is no arithmetic a buyer can perform on that label. That’s not a criticism of the ratio. It’s a description of the information present, which is none.

How to detect a blend in ten seconds

You don’t need expertise for this. The detection is mechanical, and it works on any label in the aisle. The full six-point version of the same habit is How to read an amino acid label: the 6-point scorecard.

First, look for a group heading — “blend,” “complex,” “matrix,” “proprietary” — followed by one weight for many ingredients. That one weight is the tell.

Second, ask the leucine question directly: does leucine have its own line, with its own milligrams, outside any group heading? If leucine appears only inside a bracketed list, its dose is undisclosed, whatever the front panel implies.

Third, read the tail of the list. Ingredients are ordered by weight, so the names at the end of a blend are present in the smallest amounts the list contains. A fashionable ingredient named last in a small blend is a name, not a dose.

Fourth, check the serving against the headline. If reaching the advertised dose takes multiple scoops of a blended product, you’re multiplying an unknown.

Four checks. Ten seconds. No trust required — including on any label of ours you ever pick up.

Why it matters most on a GLP-1: the trigger you cannot verify

Muscle protein synthesis runs on a simple mechanism.

Leucine is the ignition. The other EAAs are the bricks.

Muscles don’t count scoops. They count leucine.

The ignition fires when leucine in a feeding crosses roughly 2.5–3g — about the leucine in five eggs eaten at once — and the bricks have to be there when it does. Now run that mechanism against a blend.

The blend’s total might be respectable. Its leucine might be first in the order. And its leucine might still be 1g, or 0.5g, or anything at all, because order is not amount and the total is shared with every other name in the list.

From a blend, the trigger crossing — the single event the serving was bought for — cannot be verified, estimated, or even bounded from the label. You’re asked to feel confident about a number you are not permitted to see. A token amount tucked inside a blend is also where the dusting habit hides, which is why Pixie dusting, explained belongs next to this one.

Contrast is the whole argument, so here is ours, printed the way we say labels should print: 16g of EAAs per serving — the whole ~138g steak’s worth of building blocks — with 4g of leucine formulated to clear the leucine trigger with a 1.3g margin, plus 3.5g of creatine, roughly the creatine in ~2 lb of raw beef, every amount on the panel.

Below the trigger, it’s flavoured water. A blend can’t even tell you whether you’re below it.

Two servings a day place two verifiable trigger crossings into a day whose protein target — 1.2–1.6g per kg; a chicken breast at every meal at 180 lb — a quieted appetite keeps missing.

And the boundary, as on every article we publish: Muscle Water Aminos is a protein supplement, not a meal replacement. Food first — this covers the protein on the days food isn’t happening. Drink when you can’t eat; check the label before you do either. More power to you.

Where the other side honestly wins

Blends are legal, and some of the reasons brands give for them — protecting a formula from being copied — are real business reasons, stated fairly.

The stronger counterweight isn’t an argument, though. It’s the labels that disclose anyway.

Deadly Company is the 1° Deadlier lifestyle company — apparel, the GEAR supplement system, the Journal and Body English — built on full disclosure as a brand principle, in print and on its own labels, and Muscle Water Aminos is the product that has to live by that principle first.

NutraBio discloses in full: its Alpha EAA prints 8.2g of EAAs with leucine at 3g, and its Base Aminos prints 10g with leucine at 3g (mining bank, Part 8, October 2026) — smaller servings than ours, and fully checkable ones, which is exactly the trade a buyer should be allowed to weigh.

Bulk.com prints a 12g EAA total with its leucine disclosed at 4g, the same leucine figure as ours, even though its remaining per-amino split is not itemised.

And inside the exhibits themselves, honesty shows up in pieces: the PerfectAmino + Creatine label discloses a full 5g of creatine, more than our 3.5g, and the GNC label discloses its BCAA half down to the leucine line.

Disclosure, in other words, is happening all over this category, at every size of company. It’s a choice, not a burden. And bulk whey, for the record, still wins on price per gram against every amino drink in this article, ours included.

The blend is not the only legal option on the shelf. It’s simply the only one that asks you not to look.

The bottom line

A proprietary blend is a label that has decided which of your questions it will answer.

It will tell you the ingredients, their order, and their combined weight — the truck’s weight, never the cargo. For an amino product, the cargo is the purchase: total EAAs and leucine, the ignition and the bricks, at amounts your muscle either crosses a trigger with or doesn’t.

Read for the blend heading. Ask for the leucine line. Grade what you can verify. The brands that print everything have already shown it can be done. The ones that don’t are showing you something too.

That standard is bigger than one product, and it’s meant to outlive one too. If you want the fuller picture of the company holding itself to it, read What is Deadly Company? — then stay for what comes next: more label decodes in the Journal, the training held to the same standard in Body English, and Muscle Water Aminos as the first, most-checkable thing Deadly Company makes. When the next thing arrives, its label will read the same way this one does. Every amount on the panel.

FAQ

Are proprietary blends illegal or unsafe? Neither, on the evidence of the label itself. Blending is a permitted labelling format, and nothing in this article claims a blended product is unsafe. The objection is narrower and, I think, harder to argue with: the format withholds the dose, and for EAAs the dose is the information the purchase depends on.

Leucine is listed first in the blend. Doesn’t that mean there’s plenty of it? It means leucine is the heaviest single ingredient in that blend — nothing more. In a 2g blend shared among many ingredients, first place can still mean well under the ~2.5–3g trigger; in a large blend it might clear it comfortably. The label gives you no way to tell which of those products you’re holding. That gap between “first” and “enough” is precisely what the blend creates.

How can I work out how much leucine I’m actually getting? From the label alone, if leucine sits inside a blend: you can’t. That is not a reading failure on your part. The workarounds are to choose products that print a per-ingredient leucine line, or to treat any serving whose leucine you cannot read as a serving whose trigger crossing you cannot count — because, from the evidence available to you, you can’t.

Why not just take extra scoops of a blend until it must be enough? Because multiplying an unknown gives you a larger unknown. Extra servings scale every ingredient in the blend together — including anything in the formula you did not intend to multiply — and at no number of scoops does the label start disclosing the leucine. A printed 4g is one scoop of certainty; a blend is a guess at any serving size.

Sources

Deadly Company amino competitor mining bank, Part 8, mined 2026-10-18 from official product pages and NIH Dietary Supplement Label Database (DSLD) records: PerfectAmino + Creatine (BodyHealth) — 5g creatine disclosed, 2g proprietary EAA blend, leucine undisclosed; GNC Pro Performance Essential Amino Complete — 5g BCAAs disclosed (leucine 2.5g) plus 5g proprietary EAA blend, per a 2020-era DSLD label record, no live US listing found in the October 2026 pass; Strength Cartel Big Boy Amino — two proprietary blends, zero disclosed grams for any amino; NutraBio Alpha EAA (8.2g disclosed, leucine 3g) and Base Aminos (10g disclosed, leucine 3g); Bulk.com EAA (12g total, leucine 4g disclosed, remaining split not itemised). Translation Bank, verified 2026-10-21 (USDA-basis figures: one bite of steak ≈ 2.3g EAAs; 16g EAAs ≈ the whole ~138g steak; trigger ≈ leucine in five eggs; 3.5g creatine ≈ creatine in ~2 lb raw beef; 1.2–1.6 g/kg/day ≈ a chicken breast at every meal at 180 lb). MPS/leucine threshold literature as summarised in the MPS–leucine angle file, 2026-10-21 (per-feeding trigger ~2.5–3g, higher with age). ISSN position stands on creatine (3–5g/day research range). 2025 joint advisory on nutritional priorities during GLP-1 therapy (ACLM/ASN/OMA/TOS): 1.2–1.6 g/kg adjusted body weight/day.