Why the standardisation percentage is the most important line on the label

There is a small number on some supplement labels, usually in brackets, usually in the smallest type on the pack. “Standardised to 5% withanolides.” “Min. 95% curcuminoids.” “2.5% bacosides.”

That number decides more about whether the product does anything than every other line on the label combined.

And it is the first thing that gets reduced when a brand comes under cost pressure, precisely because it is the only change a customer cannot detect.

This article is about that second fact, because the first one is arithmetic and the second one is an economic incentive, and the incentive is why this is a quality-and-adulteration subject rather than a labelling one.

This is orientation, not legal, regulatory or medical advice. Permitted claims and labelling requirements change. Verify the current position with a competent consultant, and see a doctor for any health decision.

The arithmetic, briefly

We have written at length about extract ratios and standardisation separately, so just the core here.

“Ashwagandha extract 500 mg” tells you the weight of powder in the capsule. It tells you nothing about what is in that powder.

500 mg at 1.5% withanolides delivers 7.5 mg of the compound class.

300 mg at 5% withanolides delivers 15 mg.

The smaller number delivers twice as much.

And the first one will be cheaper, look more generous on the pack, and sell better to a customer comparing milligrams.

That is the whole problem in four lines.

Why it is the line that gets cut

Consider what a brand under margin pressure can actually change.

Reduce the capsule count. Visible immediately. Customer notices.

Reduce the fill weight. Printed on the pack. Customer notices.

Switch to a cheaper bottle or drop the carton. Visible. Customer notices, and sometimes complains about the pack feeling cheap.

Raise the price. Visible, and the customer may leave.

Reduce the standardisation percentage from 5% to 1.5%, keeping the same 500 mg extract declaration. Invisible. No change in appearance, taste, smell, capsule size, pack, count or price. Nothing the customer can perceive.

So of all the available levers, this is the one with no feedback mechanism. And things with no feedback mechanism drift in one direction.

This is not a claim about dishonest people. It is a claim about an incentive structure that produces the same outcome whether anyone intended it or not.

The three versions of it

Worth distinguishing, because they are morally and legally different and they look identical on a shelf.

One: the label was never specific. “Ashwagandha extract 500 mg”, no percentage stated. Nothing has been cut because nothing was promised. This is the largest category, and it is legal, and it is also the reason the whole market is hard to compare.

Two: the percentage is stated but not tested. The label says 5%, the specification says 5%, and nobody assays the finished product. The raw material may or may not have been 5%, and the manufacturer took the supplier’s certificate on trust. This is widespread and often not deliberate.

Three: the percentage is stated and the delivered product is lower. This is a false declaration, and it is the thing that per-batch assay of the finished product exists to catch.

For a buyer, all three look the same. The only thing that separates them is a finished-product assay from an accredited laboratory, batch by batch.

The repricing conversation

And this is the part that happens upstream, where no customer can see it.

A commodity price rises. The manufacturer has two options.

Come to the brand with a price increase and let them decide.

Or hold the price and adjust the formulation, a lower standardisation grade of the same extract, more excipient to keep the fill weight, same number on the label.

The second is easier for everyone in the short term. The brand’s cost is stable, the manufacturer keeps the order, the pack is unchanged, and the customer notices nothing for several months.

What the customer eventually notices is that the product stopped working, which they attribute to the category rather than to a change nobody told them about.

This is why we have written elsewhere that the single most useful question to ask a manufacturer is whether they reprice or reduce the extract load, and, more importantly, whether they will put the answer in the agreement. The answer to the follow-up is the real answer.

What makes a standardisation claim meaningful

Five conditions. A percentage with fewer than all five is decoration.

The right marker compound. And it is specific to each herb: withanolides for ashwagandha, curcuminoids for turmeric, AKBA as well as total boswellic acids for boswellia, bacosides for brahmi, gymnemic acids for gudmar, protodioscin for gokshura, andrographolides for kalmegh, fulvic acid for shilajit, elemental calcium rather than the salt weight.

In almost every case there is a friendlier, bigger number available that does not determine potency, and that is the one marketing prefers.

The test method stated. Because the same material can assay differently by different methods, and a percentage without a method is not reproducible. HPLC, UV, gravimetric, they are not interchangeable, and a high number by a non-specific method can be a lower number by a specific one.

Measured on the finished product. Not on the incoming extract. The process can degrade actives, and the capsule is what gets consumed.

Per batch. Agricultural material varies. A single assay is a snapshot.

And an accredited laboratory. An in-house number is weaker evidence, and for export it is frequently not accepted at all.

The AKBA case, as a worked example

Because it shows how a true statement can mislead.

Boswellia extracts are commonly standardised to total boswellic acids, 65% is the figure that appears everywhere.

AKBA is one specific boswellic acid, and it is the one most of the interest in boswellia attaches to.

And total boswellic acids can be brought to 65% while AKBA remains low, because the other boswellic acids make up the number.

So a label saying “65% boswellic acids” is honest, verifiable, and does not tell you what you want to know.

The same structural problem appears across this market with different compounds. Once you see the pattern, the question becomes automatic: is the stated number the one that matters, or the one that is easy to reach?

If you are a brand owner

Six things that turn this from a worry into a control.

Specify the percentage, the marker compound and the test method in your purchase specification, as a dated document, not an email.

Require a finished-product assay per batch, from an accredited laboratory, as a condition of release.

Keep retention samples of every batch, yours not just the manufacturer’s.

Commission independent assay on a batch you did not announce in advance, at least occasionally. This is the only verification with teeth, and we have written separately about how to do it.

Put the repricing clause in the agreement, that commodity increases come to you as a price conversation, not as a formulation change.

And print the percentage and the method on your own label. It costs you nothing, it makes your product comparable to a serious buyer, and it commits you publicly, which is the point.

If you are buying for yourself

Three habits.

Prefer a label that states the percentage, the marker and the method over one that states a bigger milligram number.

Calculate the active rather than comparing extract weights. The arithmetic takes ten seconds and reverses the apparent answer more often than not.

And ask the brand for the batch assay. Not the raw material certificate, the finished product assay for the batch number on your pack. The brands that send it are rare, and that rarity is the information.

And our own position

We print standardisation percentages with their methods, we assay finished product per batch, and we reprice rather than reducing extract load when commodity costs move.

We have lost orders to manufacturers who held a headline price, and the mechanism by which they held it is the subject of this article.

None of that is verifiable from reading it here. The verifiable version is a finished-product assay from a laboratory you chose, on a batch we did not know you were testing, which is what we would suggest you do to any manufacturer, including us.

The short version

1. The standardisation percentage decides whether the product does anything
2. 500 mg at 1.5% delivers 7.5 mg; 300 mg at 5% delivers 15 mg
3. The smaller extract weight delivers twice the active, and costs less
4. Every other cost-cutting lever is visible to the customer
5. Count, fill weight, pack quality and price all produce complaints
6. Reducing the standardisation grade produces none
7. A lever with no feedback mechanism drifts in one direction
8. That is an incentive structure, not an accusation about individuals
9. Three versions that look identical on a shelf
10. The label was never specific, legal, and the largest category
11. The percentage is stated but never assayed, widespread, often not deliberate
12. The percentage is stated and the product is lower, a false declaration
13. Only a finished-product batch assay separates the three
14. Upstream, a commodity rise offers the manufacturer two options
15. Reprice and tell the brand, or hold price and adjust the formulation
16. The second is easier for everyone for a few months
17. Then the customer concludes the category does not work
18. So ask whether a manufacturer reprices or reduces extract load
19. And whether they will put the answer in the agreement
20. Five conditions for a meaningful standardisation claim
21. The right marker compound, which differs by herb
22. There is almost always a bigger friendlier number that does not matter
23. The test method stated, because methods are not interchangeable
24. Measured on the finished product, not the incoming extract
25. Per batch, because agricultural material varies
26. From an accredited laboratory
27. “65% boswellic acids” can be true while AKBA stays low
28. An honest, verifiable number that does not tell you what you need
29. Brand owners: specify percentage, marker and method in a dated document
30. Require finished-product assay per batch as a release condition
31. Keep your own retention samples
32. Commission an unannounced independent assay occasionally
33. Put the repricing clause in the agreement
34. And print the percentage and method on your label, it commits you
35. Buyers: prefer a stated percentage over a bigger milligram number
36. Do the arithmetic; it reverses the apparent answer more often than not
37. Ask for the finished-product assay for the batch on your pack
38. The rarity of brands that send it is itself the information

Related guides: supplement label compliance in India, how to choose a contract manufacturer, supplement costing and margins. Related reading: extract ratios and standardisation decoded, how to commission independent testing, how to compare two quotations properly, and proprietary blend, why it usually hides something.