Research
The two documents behind a supplement batch
A product sold as a dietary supplement is supposed to have a written recipe made before the batch, and a written record made during it. Neither one is on the label, and the rules name only one reader for them.
A recipe written first, and a record written during
The supplement manufacturing rules turn on two paper documents. One is written before anything is made. The other is written while it is being made.
The first is the master manufacturing record. It is the formula and the instructions for a particular product at a particular batch size.
The second is the batch production record. It is the account of what actually happened on the day, filled in step by step as the work goes.
A certificate of analysis describes a sample after the fact. These two documents describe the intent and the execution, which is where most of what can go wrong actually goes wrong.
The recipe is per formulation and per batch size
The requirement is narrower than it first sounds, and the narrowness is the point.
The obligation is to "prepare and follow a written master manufacturing record for each unique formulation of dietary supplement that you manufacture, and for each batch size." The stated purpose is "to ensure uniformity in the finished batch from batch to batch."
So a change in formula means a new record. So does a change in batch size, because scaling a process is not the same as repeating it.
The record has to "Identify specifications for the points, steps, or stages in the manufacturing process where control is necessary to ensure the quality of the dietary supplement." It then has to establish controls that make each batch meet them.
What the recipe has to contain
The contents are itemized rather than left to judgment, and the list is short enough to read.
It carries the product name and the strength, concentration, weight or measure of each dietary ingredient for each batch size. It carries "A complete list of components to be used" and "An accurate statement of the weight or measure of each component to be used."
It also carries "The identity and weight or measure of each dietary ingredient that will be declared on the Supplement Facts label," and the identity of every ingredient going on the ingredient list.
One line is easy to miss and worth knowing about. The record must include "A statement of any intentional overage amount of a dietary ingredient." Putting in more than the label says is contemplated, and it has to be written down.
Yield, and the number that triggers an investigation
Theoretical yield is how much product a process should produce. Comparing it to what came out is one of the cheapest error detectors in manufacturing.
The recipe has to state the expected yield at each controlled step and at the end. It also has to state the limits. The recipe names "the maximum and minimum percentages of theoretical yield beyond which a deviation investigation of a batch is necessary and material review is conducted and disposition decision is made."
That sentence sets a trip wire before the batch exists. Falling outside the band is not a judgment call made afterward by whoever is looking at the numbers.
The instructions also have to carry "Special notations and precautions to be followed" and "Corrective action plans for use when a specification is not met." The plan for failure is part of the plan.
Two people, weighing and adding
Manual operations get a specific requirement, and it is the one a reader can picture most easily.
The written instructions must include specific actions that "include verifying the weight or measure of any component and verifying the addition of any component."
For manual work, the regulation names who does what. It requires "One person weighing or measuring a component and another person verifying the weight or measure."
It then requires the same again for the next step: "One person adding the component and another person verifying the addition." Two people, twice, on every component.
The batch record is the proof the recipe was followed
The second document exists to close the gap between a written plan and a real batch.
A maker must "prepare a batch production record every time you manufacture a batch of a dietary supplement," and it has to hold complete information about the production and control of that batch.
The binding sentence is the third one. The batch record "must accurately follow the appropriate master manufacturing record and you must perform each step in the production of the batch."
Read plainly, that makes the recipe enforceable. A step in the master record that nobody performed is a defect in the batch, not a formality.
What the batch record has to capture
The itemized list here is longer, and it is mostly about traceability.
It carries the batch, lot or control number of the finished batch, and "The identity of equipment and processing lines used in producing the batch." It carries the date and time that equipment was maintained, cleaned and sanitized, or a cross-reference to the logs holding that.
It carries the unique identifier assigned to each component, packaging and label used, and the identity and weight or measure of each component actually used.
And it carries the numbers as they came out. One entry is "A statement of the actual yield and a statement of the percentage of theoretical yield at appropriate phases of processing." Another is "The actual results obtained during any monitoring operation."
Initials, at the time, on each step
The record is not written up afterward from memory. Several paragraphs say so in the same phrase.
The batch record must carry documentation, at the time of performance, of the manufacture of the batch. That includes the date each step of the master record was performed and "The initials of the persons performing each step."
The two-person rule reappears here as four separate initials: the person who weighed each component, the person who verified that weight, the person who added it, and the person who verified the addition.
Quality control personnel sign the end of it. Their documented acts include reviewing the batch record, approving or rejecting any reprocessing, and having "Approved and released, or rejected, the batch for distribution, including any reprocessed batch."
How long the paper lasts, and who is entitled to see it
Retention is set against the product, not the calendar year.
Records must be kept "for 1 year past the shelf life date, if shelf life dating is used." Where it is not used, the period is "2 years beyond the date of distribution of the last batch of dietary supplements associated with those records." Originals, true copies or electronic records are all acceptable.
Availability is where the reader's expectations should reset. The obligation is to have all records "readily available during the retention period for inspection and copying by FDA when requested."
All 84 sections of the part were read for the words public, consumer, customer and purchaser. Four sections use one of them, and every use is either a retail exemption or the phrase "public health significance" about microorganisms. The agency is the only reader these record rules name.
What this is worth to someone holding a bottle
Three things follow, and one non-thing that matters just as much.
The non-thing first: these documents are internal. A buyer cannot request them, and their existence cannot be confirmed from a product page. Nothing on a label reports whether a master record was written or a batch record was signed.
What can be done is narrower and still useful. A batch or lot number on the bottle is the handle that ties a unit to a record, so a product with no lot marking has nothing to tie back to.
It is also worth knowing that an intentional overage is a contemplated, documented thing rather than an error. A measured amount above the label claim does not by itself mean a batch went wrong.
And these rules bind whoever is inside the dietary supplement category. Which category a given peptide product lawfully sits in is a separate question, settled elsewhere on this site and not by anything above.
Key takeaways
- Two documents sit behind a supplement batch: a written recipe made first, and a written record made during.
- A master manufacturing record is required per formulation and per batch size, to keep batches uniform.
- It must state expected yields and the percentages beyond which a deviation investigation is required.
- It must also carry any intentional overage, corrective action plans, and a two-person check on weighing and adding.
- A batch production record must accurately follow the master record, with every step actually performed.
- The batch record carries lot numbers, equipment identity, actual yield, monitoring results and initials at the time of performance.
- Records are kept one year past shelf life or two years past distribution of the last associated batch.
- The only recipient these record rules name is the agency, not the buyer.
Frequently asked questions
What is a master manufacturing record?
It is the written recipe and instruction set for one product at one batch size. A maker must prepare and follow one for each unique formulation of dietary supplement it manufactures, and for each batch size, so that finished batches come out the same from batch to batch. It identifies the points in the process where control is needed, and it establishes controls that make each batch meet those specifications.
What is a batch production record?
It is the account of one actual batch, prepared every time a batch is manufactured. It must hold complete information relating to the production and control of that batch, and it must accurately follow the master manufacturing record, with each step in the production actually performed. It captures lot numbers, the equipment and processing lines used, the components used, actual and percentage-of-theoretical yield, monitoring results, and testing results.
Does the label tell me whether these records exist?
No. Neither document appears on a label or a product page, and no part of the supplement manufacturing rules requires either one to be shown to a buyer. All 84 sections of the part name only one recipient for records: FDA, which may request them for inspection and copying during the retention period. The practical handle a buyer does get is the batch or lot number on the container, which is what ties a unit back to a record.
What is an intentional overage?
It is a deliberate decision to put more of a dietary ingredient into a batch than the label declares, usually to allow for loss over shelf life. The rules treat it as normal and require it to be written down: the master manufacturing record must include a statement of any intentional overage amount of a dietary ingredient. Because it is planned and documented, a measured amount above the label claim is not on its own evidence that something went wrong.
Why does the two-person rule keep appearing?
Because weighing and adding are the two manual steps where a single mistake propagates through an entire batch and is very hard to detect afterward. For manual operations the master record must require one person weighing or measuring a component and another verifying the weight or measure, then one person adding it and another verifying the addition. The batch record then has to carry the initials of all four of those people.
How long are these records kept?
One year past the shelf life date where shelf life dating is used, or two years beyond the date the last batch associated with those records was distributed. They may be kept as originals, as true copies such as photocopies or microfilm, or as electronic records, and electronic records have to meet the separate electronic records part of the chapter.
Sources
Each document below is named as it names itself, with the date printed on that document rather than the day it was read.
- Title 21 Code of Federal Regulations section 111.210, What must the master manufacturing record include — the itemized contents, including the complete list of components at (b), the identity and weight of each ingredient declared on the Supplement Facts label at (d), the intentional overage statement at (e), the theoretical yield limits that trigger a deviation investigation at (f), and the written instructions at (h) including the two-person weighing and addition checks for manual operations — Electronic Code of Federal Regulations, Office of the Federal Register, June 2007
- Title 21 Code of Federal Regulations section 111.205, What is the requirement to establish a master manufacturing record — the obligation to prepare and follow one for each unique formulation and each batch size to ensure uniformity from batch to batch, and the requirement that it identify specifications at the points, steps or stages where control is necessary — Electronic Code of Federal Regulations, Office of the Federal Register, June 2007
- Title 21 Code of Federal Regulations section 111.260, What must the batch record include — the batch, lot or control number at (a), the identity of equipment and processing lines at (b), the actual and percentage-of-theoretical yield at (f), the actual monitoring results at (g), the documentation at the time of performance with the initials of each person at (j), and the quality control review, approval and release or rejection at (l) — Electronic Code of Federal Regulations, Office of the Federal Register, June 2007
- Title 21 Code of Federal Regulations section 111.255, What is the requirement to establish a batch production record — the obligation to prepare one every time a batch is manufactured, to hold complete information relating to production and control, and to accurately follow the appropriate master manufacturing record with each step performed — Electronic Code of Federal Regulations, Office of the Federal Register, June 2007
- Title 21 Code of Federal Regulations section 111.605, What requirements apply to the records that you make and keep — retention for one year past the shelf life date where shelf life dating is used, or two years beyond distribution of the last associated batch, and the acceptable record forms — Electronic Code of Federal Regulations, Office of the Federal Register, June 2007
- Title 21 Code of Federal Regulations section 111.610, What records must be made available to FDA — the requirement that all records be readily available during the retention period for inspection and copying by the agency when requested — Electronic Code of Federal Regulations, Office of the Federal Register, June 2007