By Ts. Ng Kuak Ping, FIFST — Food Technologist, Executive Manager, Bionutricia

The question everyone asks — and the number everyone uses

It arrives at the same point in every supplement brand’s life. Sales are real. The forecast looks credible. And someone in the room says the thing that sounds like maturity: “At this volume, shouldn’t we just make it ourselves?”

Then a spreadsheet appears. On one side, the price of contract manufacturing per unit. On the other, an estimate of what it would cost to make the same unit in-house. The in-house number is smaller. The decision looks obvious.

It isn’t. That spreadsheet has quietly assumed the single thing that decides the entire question — and got it wrong.

A factory doesn’t cost you when it runs. It costs you when it stops.

The real variable: utilisation

A production line has two states. It is either running, or it is not. What almost nobody prices correctly is that the second state is not free.

An idle line still has rent. It still has power. It still has people — because you cannot hire and fire a trained production team around a lumpy order book, and if you try, you lose them permanently. It still has maintenance, calibration, insurance and depreciation, all ticking over on a calendar that does not care whether you had orders this month.

All of that overhead has to land somewhere. And it lands on the units you actually made.

This is why two plants with identical equipment can have completely different unit economics. Not because one is better run. Because one runs.

The cost nobody budgets for

Here is where the spreadsheet gets genuinely dangerous. Founders model equipment, floor space and headcount. Almost none of them model the compliance system — and the compliance system never switches off.

To manufacture supplements at any credible standard, you are not maintaining one certification. You are maintaining a stack of them, each with its own audit cycle, its own documentation regime, and its own capacity to shut you down:

• FSSC 22000 — food safety system certification
• GMP — Good Manufacturing Practice
• HACCP — hazard analysis and critical control points
• JAKIM Halal — Malaysia’s halal certification, and the one that opens the global halal market
• US FDA registration — required to ship into the United States
• MeSTI — Malaysia’s food safety assurance scheme

Now the part that breaks the model: the cost of maintaining these is very nearly the same whether you make one batch a year or a thousand. The auditor’s time does not shrink because your volume did. The documentation burden does not halve because you had a slow quarter. Validation still has to be validated. Retained samples still have to be retained. Corrective actions still have to be raised, closed and evidenced.

And it is not a one-off. It is annual. Forever.

You didn’t buy a factory. You bought a quality department.

That is the sentence I wish someone had put in front of every founder who ever asked me this question. A manufacturing facility is not primarily a set of machines. It is a permanent institutional obligation to prove, in writing, to multiple external bodies, every year, that what you say happened actually happened.

Some brands genuinely want that. Most want to sell supplements.

What you’re actually choosing between

Strip away the spreadsheet and the choice is simpler than it looks. You are choosing which of your costs is fixed and which is variable.

In-house converts a variable cost into a fixed one

Every unit you make gets cheaper as volume rises — that is real, and it is the whole appeal. But the moment volume falls, that same structure works against you with exactly the same force. Fixed costs are a lever. Levers move both ways.

An OEM converts a fixed cost into a variable one

You pay when you produce. The compliance system, the idle-hour risk, the maintenance calendar and the audit cycle sit on someone else’s balance sheet. Your downside in a slow quarter is a smaller order, not an empty building you are still paying for.

Neither of these is morally superior. They are different bets about how certain you are of your own demand.

The rule that survives

Until all three are true simultaneously, a manufacturing partner is not the compromise. It is the correct structure. It keeps your cost variable while your demand is still being discovered — which is precisely the period in which most brands either find their market or die trying.

One question to ask any manufacturer

If you take one practical thing from this article, take this.

Ask any contract manufacturer you are evaluating: “Show me your utilisation.”

Then watch what happens.

A manufacturer running a well-utilised line has stable costs, a compliance system that is genuinely exercised rather than theoretically maintained, and no particular incentive to inflate your order. A manufacturer whose line sits idle has every incentive to push volume onto you — and their idle hours will find their way into your price whether they are itemised or not.

How they answer, and how fast, tells you most of what you need to know.

Frequently asked questions

Is OEM or in-house supplement manufacturing better?

Neither is universally better — the deciding factor is utilisation, not cost per unit. If you cannot keep a line running for most of the year, an in-house plant charges you rent, power, people and a full compliance system regardless, and every idle hour is billed back into the units you did make. Build in-house when your volume is proven, stable and yours. Use an OEM while volume is still being discovered.

What is the real cost of building your own supplement factory?

The visible cost is equipment and facility. The cost most founders miss is the permanent compliance system — FSSC 22000, GMP, HACCP, JAKIM Halal, US FDA registration and MeSTI. Those audits, plus documentation, validation, retained samples and corrective actions, cost effectively the same whether you run one batch or a thousand, every year, forever.

Why is cost per unit the wrong way to compare OEM and in-house?

Because cost per unit assumes the line runs. Fixed overhead does not scale down with low volume, so a plant at low utilisation loads all of its idle hours onto the units it actually produced. Two plants with identical equipment can have completely different unit economics purely because one runs and one does not.

When should a supplement brand build its own factory?

When three things are true at once: volume is proven rather than forecast, stable across the year rather than seasonal, and yours rather than dependent on a single customer or channel. Until all three hold, an OEM partner converts a fixed cost into a variable one.

What single question should you ask a contract manufacturer?

Ask them to show you their utilisation. A well-utilised manufacturer has stable costs and an exercised compliance system. An idle one has every incentive to push volume onto you — and their idle hours end up in your price. The answer, and how quickly it comes, tells you most of what you need to know.

About Bionutricia

Bionutricia has manufactured halal supplements from Sungai Buloh, Malaysia since 2006, for 239+ brand partners. We hold FSSC 22000, GMP, HACCP, JAKIM Halal, US FDA registration and MeSTI, plus NanoVerify certification, and we run our own patented extraction (MY-188945-A) and liposomal (PI2023005773) platforms. Formats include powder, liquid and gel sachets, pouch beverages, chewable tablets and liquid bottles.

Want to see what our line actually runs? Talk to us.

Reviewed by Bionutricia’s in-house technical team — registered pharmacist, nutritionist, dietitian and PhD in biomedical science. This article is manufacturing and business guidance, not medical advice.