Knowledge Atlas

Every year, supplement brands lose months

of development time and tens of thousands of dollars

because they signed with the wrong manufacturer.

Most of these problems were avoidable.

Here are five things you should verify before you sign.

First, their cGMP status.

The FDA requires every supplement manufacturer

to follow current good manufacturing practices

under 21 CFR Part 111.

Someone saying we're cGMP compliant isn't proof.

Asked to see their FDA inspection report,

which is called a Form 483.

If they've never been inspected, that's worth knowing.

And if they were inspected and received observations,

ask what they correct and how.

A manufacturer who can walk you

through their inspection history

is one who takes compliance seriously.

Secondly, how they handled identity testing.

We all know how much consumers care

about what's in their product, and they should.

Section 111.75 requires manufacturers

to verify the identity of every dietary ingredient

before it goes into their product.

This is where quarters get cut most often.

Ask specifically, do you run identity testing in-house

or do you rely on the supplier certificate of analysis?

If supplier CoA alone is not sufficient

under the regulation, you want a manufacturer

that runs its own confirmatory testing

or uses an independent lab.

Third, their quality control structure.

This is key.

Part 111 requires dedicated quality control

personnel with a documented authority

to approve specifications, SOPs, and deviations.

Best practice operations keep QC organizationally independent

from production.

Ask who their QC lead is.

Ask when QC last approved

their standard operating procedures.

Ask to see a redacted Master Manufacturing Record

so you can evaluate their documentation discipline.

The quality of their paperwork tells you more

about their operation than any facility tour.

Four, third-party certifications.

cGMP is the legal floor, not the ceiling.

Look for third-party supplement GMP audits

from programs like NSF.

These certifications mean an independent auditor

has reviewed the facility

against a published supplement-specific standard.

Not every good manufacturer has one,

but if they do, ask which standard,

when the last audit was,

and whether you can see the certificate.

If they can't produce it, that tells you something.

Fifth, production transparency.

Before you sign, ask for a sample

master manufacturing record

for a product similar to yours.

The MMR defines every step of your production process.

Ingredients, quantities, equipment,

in-process checks, and final specifications.

A manufacturer who shares a redacted MMR

is showing you how they think about production.

A manufacturer who won't discuss it

is asking you to trust them without evidence.

These five checks won't guarantee a perfect partnership,

but they filter out the manufacturers

who aren't ready for scrutiny.

We publish a full verification checklist

in a searchable directory of assessed manufacturers

at inventoryready.com.

Links are in the description.

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