FDA 483 Citations for Dietary Supplement Component Specifications Under 21 CFR 111.70(b)

22 hours ago

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"For component(s) used in the manufacture of a dietary supplement, you did not establish [identity specifications] [necessary specifications to ensure the specifications for purity, strength, and composition of the dietary supplement are met] [limits on contamination to ensure the quality of the dietary supplement]." FDA investigators cited 21 CFR 111.70(b) with that wording 177 times on system-generated Form FDA 483s in fiscal year 2025, making it the second most cited observation under Part 111.

Components include dietary ingredients, such as botanicals, vitamins, minerals and amino acids, and other ingredients, such as excipients, capsule shells and flow agents. If a firm does not define what each component must be, it cannot decide whether a delivered lot is acceptable, and every finished batch inherits that uncertainty.

What the citation means

Examples written after "Specifically" usually describe:

No specifications for some or all components
Specifications copied from a supplier's sales sheet, with no review
An identity specification with no method, or a method that cannot distinguish the ingredient from adulterants or substitutes
No strength or potency specification for dietary ingredients that drive label claims
No limits for microbial contamination, heavy metals, pesticides or solvents where relevant
Botanical specifications that do not state the plant part or form, such as root versus leaf, or extract versus powder

What Part 111 requires

Component specifications (111.70(b)). For each component that you use in the manufacture of a dietary supplement, you must establish:

An identity specification
Component specifications that are necessary to ensure that specifications for the purity, strength and composition of dietary supplements manufactured using the components are met
Limits on those types of contamination that may adulterate, or that may lead to adulteration of, the finished batch of the dietary supplement

Determining whether specifications are met (111.75(a)). Before using a component, you must conduct at least one appropriate test or examination to verify the identity of any component that is a dietary ingredient, unless you petition for and receive an exemption. For other specifications, and for components that are not dietary ingredients, you must confirm identity and determine whether other specifications are met, either by testing or examination, or by relying on a certificate of analysis from a qualified supplier.

Receiving (111.155 and 111.160). Components must be visually examined on receipt, quarantined until quality control approves them for use, and identified so each lot can be traced.

How to respond to the 483

Part 111 does not set a deadline for responding, but most firms respond in writing within 15 business days of the close of the inspection, so FDA has the response before it decides on further action.

Write specifications for every component

For each component, define identity (with a method able to confirm it), purity and strength or potency as needed for your finished product specifications, composition, physical attributes where relevant, and contamination limits. For botanicals, specify the species, plant part and form.

Connect components to finished product claims

Show that each finished product strength claim traces to a component specification. If a capsule claims 500 mg of an extract standardized to a marker compound, the component specification must include that marker.

Assess components already used

For lots used without specifications, review supplier data and any retained samples. Test where needed, and assess whether finished batches made with them meet specifications.

Fix the system

A specification procedure with quality control approval
A component specification format with methods and acceptance criteria
Receiving and quarantine controls
Supplier qualification for any use of certificates of analysis
Periodic review of specifications when suppliers, sources or products change

What a compliant component specification contains

Component name, supplier and grade
Identity specification and method
Strength or potency, where it drives a label claim
Purity and composition requirements
Contamination limits and their basis
Physical characteristics where they affect processing
Storage conditions and retest or expiry date
Approval by quality control

Common mistakes in component specification responses

Using the supplier's specification as-is without review or approval
Writing identity specifications with methods that cannot detect substitution
Forgetting excipients, capsules and processing aids
Not linking component potency to label claims
Writing specifications but leaving receiving and quarantine unchanged

Example: how one response section might read

This illustrates structure only; your response must describe your own products and facts.

Observation 2: You did not establish component specifications for identity, purity, strength, composition and contamination limits. Specifically, no specifications exist for turmeric root extract.

Response:

Correction: A component specification was approved on a stated date. It requires identity by HPTLC against a reference standard, curcuminoid content consistent with the finished product claim, residual solvent limits, heavy metal limits and microbial limits.
Product assessment: Retained samples of the two lots in inventory were tested and met the specification. Finished batches made from earlier lots were assessed against reserve sample results.
Extended review: Specifications for all 64 components will be approved by quality control by a stated date, beginning with dietary ingredients.
Corrective action: A specification procedure now requires an approved specification before any new component is received.

Frequently asked questions

Do non-dietary ingredients need specifications?

Yes. Section 111.70(b) applies to each component used in manufacturing, including excipients and capsule shells.

Can we use the supplier's specification?

You can use it as a starting point, but the specification must be yours, approved by quality control and sufficient to ensure your finished product specifications are met.

Do botanical components need special attention?

Yes. Identity for botanicals must address species, plant part and form, and methods must be able to detect common adulterants or substitutes.

How A.P. Lyon documents help

A.P. Lyon's Dietary Supplement cGMP Quality System (21 CFR 111) includes procedures and forms for component specifications, receiving, quarantine, identity testing and supplier qualification. Brand owners who rely on contract manufacturers can use the Supplement Brand Owner Compliance Pack to approve and oversee specifications.

Documents are editable Word and Excel files and must be adapted to your products and operations. Specifications must be set by qualified people based on your own components.

Next steps

Write and approve specifications for every component
Link component potency to finished product claims
Assess components already used without specifications
Respond in writing within 15 business days with dates for each action

To compare the complete system with the brand owner pack, see all dietary supplement documents.

Not sure where your quality system stands? Take the free QMS gap check: about 20 questions, an instant report of your gaps by clause, and the procedures that close each one.