What Is a Master Manufacturing Record for Supplements? What 21 CFR 111 Requires, How It Differs From a Batch Record, and What Your Brand Should Ask For

Short answer: A master manufacturing record (MMR) is the written master recipe and instructions that 21 CFR 111.205 requires for each unique supplement formulation and each batch size. A batch production record is the completed record for one batch, prepared every time a batch is made. Both are kept 1 year past shelf-life date, or 2 years after the last batch's distribution. ^[1]

Definition: The master manufacturing record is the approved plan for making a supplement; the batch production record is the evidence that one specific batch followed that plan. FDA's rule says the batch record "must accurately follow the appropriate master manufacturing record." ^[1]

If you are scaling up or moving to a new contract manufacturer, these two documents are where your product's consistency lives. Here is what each must contain, how they differ, who is responsible for what, and what to put in writing.

What does 21 CFR 111 require a master manufacturing record to include?

The MMR rules sit in Subpart H of 21 CFR Part 111. Under §111.205, a manufacturer must prepare and follow a written MMR "for each unique formulation of dietary supplement that you manufacture, and for each batch size," to ensure uniformity from batch to batch. ^[1] Section 111.210 lists the contents, including: ^[2]

• The supplement's name and the strength, concentration, weight or measure of each dietary ingredient for each batch size
• A complete list of components and an accurate statement of the weight or measure of each
• The identity and amount of each dietary ingredient declared on the Supplement Facts label
• Any intentional overage of a dietary ingredient
• The theoretical yield at each control point and the expected final yield, with maximum and minimum percentages beyond which a deviation investigation is necessary
• A description of packaging and a representative label
• Written instructions: specifications, sampling and testing procedures, specific actions to perform and verify each control step, special precautions, and corrective action plans for when a specification is not met

Two details matter for scaling brands. For manual operations, the instructions must include one person weighing or measuring a component and another verifying it. ^[2] And because the requirement is per batch size, moving from a 1,000-unit run to a 10,000-unit run means the manufacturer needs an MMR for the new size. ^[1]

What goes in a batch production record?

Subpart I covers the batch production record (BPR). Section 111.255 requires one "every time you manufacture a batch of a dietary supplement," with complete information on the production and control of that batch. Section 111.260 lists the contents, including: ^[1]

• The batch, lot or control number of the finished batch and of each packaged and labeled lot
• Equipment and processing lines used, and when they were cleaned and sanitized (or a cross-reference)
• The unique identifier and the weight or measure of each component used
• Actual yield and the percentage of theoretical yield at appropriate phases
• Monitoring and test results, and documentation that specifications were met
• Each step documented at the time of performance, with dates and the initials of the people who weighed, verified and added components
• Packaging and labeling records, including label reconciliation when required
• Documentation that quality control personnel approved and released, or rejected, the batch
• Any material review and disposition decision, and any reprocessing

What is the difference between a master manufacturing record and a batch record?

The MMR is the approved blank form; the BPR is the completed form for one lot. If a batch's yield falls outside the range the MMR sets, the BPR is where it shows up.

Sources: eCFR 21 CFR Part 111, Subparts F, H and I. The last row is PMG's suggested practice, not a regulatory requirement.

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Who prepares and keeps these records when you contract out manufacturing?

The firm that manufactures prepares and follows the MMR and creates each BPR; §111.205 applies to each formulation "that you manufacture." ^[1] So if you switch facilities, the new manufacturer prepares its own MMR for its equipment and batch size.

That does not take the brand out of the picture. FDA's 2010 Small Entity Compliance Guide for the supplement CGMP rule says a distributor that contracts with a manufacturer and sells the product under its own label "has an obligation to know what and how manufacturing activities are performed," so it can decide whether the product meets its specifications and whether to release it. ^[3]

An FDA warning letter from May 2017, sent to a firm selling supplements a contract manufacturer made for it, is blunter: a firm may contract out manufacturing, packaging or labeling, but "it cannot contract out its ultimate responsibility" to ensure its supplement is not adulterated for failing CGMP requirements. The letter cited the need for finished product specifications the contract manufacturer must meet and documentation of quality control approval for release. ^[4]

In practice: the manufacturer writes and executes the records; the brand sets specifications, knows how the product is made, and makes sure release decisions are documented.

How long must MMRs and batch records be kept?

Key rules at a glance

• Retention: 1 year past the shelf-life date, if shelf-life dating is used, or 2 years beyond distribution of the last batch associated with the records (§111.605). ^[1]
• Format: originals, true copies or electronic records; electronic records must comply with 21 CFR Part 11 (§111.605). ^[1]
• FDA access: records must be readily available for FDA inspection and copying when requested (§111.610). ^[1]
• Per batch size: one MMR for each unique formulation and batch size (§111.205). ^[1]
• Every batch: a BPR every time a batch is manufactured (§111.255). ^[1]

With a two-year expiration date, records for a lot made today are held for roughly three years. Your agreement should say who keeps them and how you get access, including after the relationship ends.

The Record Trail: four checks before you approve a production run

1. 1.Specify. Put your finished product specifications in writing: identity, purity, strength, composition and label claims.
2. 2.Master. Confirm an approved MMR exists for your formula at the batch size you are ordering, and agree how changes reach you.
3. 3.Batch. Agree what you get for each lot (a batch record copy, a summary, or review during an audit) and tie it to the lot number on your certificate of analysis.
4. 4.Release and retain. Confirm who signs the QC release and who holds the records for the full retention period.

What should your brand ask for in a quality agreement?

The MMR is the manufacturer's working document, and how much of it you see is a matter for your agreement. Ask what they will share, in what form, and when.

MMR & Batch Record Request Checklist (printable)

Download the fillable checklist (PDF)

• Finished product specifications, approved by both parties
• Confirmation of an approved MMR for each batch size we order
• Who in quality control approves the MMR and changes
• How we are notified of MMR changes (components, suppliers, process, yields)
• What we receive per lot: batch record copy, summary, or review rights
• Actual yield and percent of theoretical yield per batch
• Notice of deviations, material review decisions and reprocessing
• QC release documentation and COA for each lot, matched to the batch record
• Who keeps records, for how long, and in what format
• Our access to records if we change manufacturers

Planning bigger runs? Pair this with our guide to scaling private label production and reorders.

Glossary

• MMR: master manufacturing record; the written plan for one formulation and batch size.
• BPR: batch production record; the record of one manufactured batch.
• Batch: a specific, uniform quantity of a supplement made according to a single manufacturing record during the same cycle of manufacture (§111.3).
• Lot: a batch, or a specific identified portion of a batch, that is uniform (§111.3).
• Theoretical yield: the quantity that would be produced based on the components used, with no loss or error (§111.3).
• Reprocessing: using clean components or supplements previously removed from manufacturing and made suitable for use (§111.3).
• Own-label distributor: a brand that has a manufacturer make a supplement it sells under its own label.

How PMG handles batch documentation

PMG makes supplements in FDA-registered, GMP-compliant partner facilities in five states. Production runs with batch records, identity testing and quality control on every run, and you receive COA documentation for your batch. After the first run, your formula, specification and testing data are documented, so repeat batches move straight to scheduling. See nutraceuticals and supplements for formats and minimums. ^[5]

Moving an existing product? Our switching manufacturers page lists what to send for a transfer quote, including your spec sheet or formula, your current manufacturer's SOP and finished samples. We review the available documentation rather than assume a transfer is a simple repeat order. ^[5]

Frequently asked questions

About Product Management Group

PMG is a full-service private label manufacturing partner for skincare, nutraceuticals, supplements, personal care, and wellness brands. We handle everything from R&D and formulation through manufacturing, packaging, regulatory compliance, and fulfillment, working with FDA-registered, GMP-compliant partner facilities in Florida, North Carolina, Texas, Minnesota, and Arizona. We work with everyone from first-time founders to established retail brands, with minimums starting at 1,000 units.