Research · 10 min read
What a Label Has to State About How a Drug Is Supplied and Stored
There is a numbered section on an approved label that answers what physically arrives and how it has to be kept. It is the least-read part of the document, and it is where the count in a carton and the clock on a container are written down.
Key takeaways
- An approved label carries a required section, printed as section 16, that states what is supplied and how it is stored.
- 21 CFR 201.57(c)(17) asks for four items: strength, the units ordinarily available for prescribing, identifying information, and special handling and storage conditions.
- The section's own scope clause limits it to prescription drug products described in 21 CFR 201.56(b)(1), so it does not reach every label.
- Carton counts are published on these labels, so how many units arrive in a shipment can be checked rather than assumed.
- Room-temperature allowances differ by presentation, not by molecule, and the labels examined here state four different ones.
- A compounded preparation has no such section, so the equivalent information has to come in writing from the pharmacy that prepared it.
Answer first: the question has its own numbered slot
An approved prescription label is not free-form. A federal regulation, 21 CFR 201.57, sets what each numbered section contains, and paragraph (c)(17) is the one printed as section 16.
Its heading is How Supplied/Storage and Handling. The regulation says the section must contain information on the available dosage forms to which the labeling applies and for which the manufacturer or distributor is responsible.
So the answer to what arrives, in what quantity, and under what conditions it has to be held is not a customer-service question. For an approved product it is a required part of the document.
One limit belongs at the top. The section opens by saying its requirements apply only to prescription drug products described in 21 CFR 201.56(b)(1). Older approvals sit under a different rule.
The four items, and what each one settles
The regulation lists what the section must include, as appropriate, in four parts. Read them as four separate questions rather than one paragraph.
First, the strength or potency of the dosage form in the metric system. That is the figure most shopping pages quote and the only one most readers look at.
Second, the units in which the dosage form is ordinarily available for prescribing by practitioners. The regulation's own example is bottles of 100, and this is the item that tells you how many things are in a box.
Third, appropriate information to facilitate identification of the dosage forms, such as shape, color, coating, scoring, imprinting, and National Drug Code number. Fourth, special handling and storage conditions.
The third and fourth items are the ones a buyer almost never sees quoted anywhere, and they are the two that describe the object rather than the molecule.
What the carton count actually tells a shopper
The second item is more useful than it looks, because a price is usually attached to a shipment rather than to a milligram.
The semaglutide weight-management label states its product is available in cartons containing four single-dose pens, four single-dose syringes with integrated needles, or one single-patient-use pen holding four weekly doses.
The tirzepatide weight-management label states cartons containing four prefilled single-dose pens, one single-dose vial, four single-dose vials, one multi-dose vial, or one single-patient-use pen. Its multi-dose vial table states four doses per vial.
The semaglutide type 2 diabetes label goes further and prints a Carton Contents column. For its single-patient-use pens that column names the pen and a stated number of disposable needles.
Two things follow. An approved product is not always a pen, since a vial presentation of an approved drug exists and is on the label. And the number of units in a carton is published, so it can be checked rather than assumed.
The storage window belongs to the presentation, not the molecule
This is the part that surprises people, and it is visible only by reading more than one label.
The semaglutide weight-management label states that its single-dose pen or single-dose syringe is stored in the refrigerator from 2°C to 8°C (36°F to 46°F). It adds that prior to cap removal the pen can be kept from 8°C to 30°C (46°F to 86°F) up to 28 days.
The same label states that the single-patient-use pen, after first use, can be stored for 56 days between 15°C to 30°C (59°F to 86°F) or refrigerated. Same active ingredient, same brand, a different presentation, and roughly double the room-temperature allowance.
The tirzepatide label states that its single-dose pen and single-dose vial can be stored unrefrigerated at temperatures not to exceed 30°C (86°F). Its stated limit there is a total of 21 days, after which the label directs discarding them.
For that product's multi-dose vial and single-patient-use pen, the label sets three separate limits on an opened container. It states throwing it away after a total of 30 days at room temperature, 30 days after first use, or after taking four weekly doses. That last clause adds four words worth reading: even if there is medicine left in it.
Four different allowances, printed in the same numbered section, across two molecules and five presentations. None of them is a general rule about this class of medicine.
Why a number from one label is not a number for another
Each of those statements is approved labeling for one specific product, in one specific presentation, sold by one specific sponsor. That is the whole of its authority.
A figure repeated in a forum, in a marketing email, or in an article like this one has left the document that gave it meaning. It may be right for the product it came from and wrong for the one in your hand.
The practical test is short. Does the sentence you are relying on name the product and the presentation? If it does not, it is not about anything in particular.
The document that governs what you were dispensed came with it, and the pharmacy that dispensed it can send it again. That is where a storage question is answered.
What a compounded preparation has instead
A compounded preparation is not made under an approved application. There is no approved labeling for it, so there is no section 16 and no required list of the four items above.
That is not an accusation. It is a description of which document exists. It means the equivalent information has to come from the pharmacy that prepared the specific vial or syringe you received.
Ask for it in writing before the first shipment rather than after it. What presentation is supplied, how many doses arrive, and what handling directions accompany it are all answerable questions.
General agency guidance about compounded multiple-dose vials exists and is covered separately in these pages. It is not the same thing as a required labeling section, and it should not be read as one.
What this makes askable
Three questions come straight off the regulation, and none of them requires any clinical knowledge to ask.
How many units are in a shipment, and is that stated anywhere I can read before I pay? What presentation is it, in the words the label would use? And where is the handling direction for exactly this product written down?
Then one follow-up that separates a complete service from a thin one. If I have a question about storage in six weeks, who answers it, and how fast?
A program that can answer all four in writing has told you something real about what it is. A program that cannot has also told you something.
Sources
- 21 CFR 201.57 — Specific requirements on content and format of labeling for human prescription drug and biological products described in § 201.56(b)(1)The section's opening scope clause, that its requirements apply only to prescription drug products described in § 201.56(b)(1); paragraph (c)(17), printed as section 16 and headed How Supplied/Storage and Handling, requiring information on the available dosage forms to which the labeling applies and for which the manufacturer or distributor is responsible; and its four listed items — the strength or potency of the dosage form in the metric system, the units in which the dosage form is ordinarily available for prescribing by practitioners with bottles of 100 as the regulation's own example, appropriate information to facilitate identification of the dosage forms such as shape, color, coating, scoring, imprinting and National Drug Code number, and special handling and storage conditions.
- 21 CFR 201.56 — Requirements on content and format of labeling for human prescription drug and biological productsParagraph (b)(1), which defines the categories of prescription drug products subject to the labeling content and format requirements of § 201.57 by reference to when a new drug application, biologics license application or efficacy supplement was approved, was pending, or was submitted; and paragraph (b)(2), which places products outside that description under § 201.80 instead. This is the limiting clause quoted in the article rather than glossed over.
- WEGOVY- semaglutide injection, solution; WEGOVY- semaglutide tabletSection 16, How Supplied/Storage and Handling: that the injection is available in cartons containing four single-dose pens, four single-dose syringes with integrated needles, or one single-patient-use pen holding four weekly doses; the carton table's total strength per total volume and National Drug Code columns; the recommended storage statements that the single-dose pen or syringe is stored in the refrigerator from 2°C to 8°C (36°F to 46°F) and that prior to cap removal the pen can be kept from 8°C to 30°C (46°F to 86°F) up to 28 days; and that after first use the single-patient-use pen can be stored for 56 days between 15°C to 30°C (59°F to 86°F) or in a refrigerator.
- ZEPBOUND- tirzepatide injection, solution; ZEPBOUND KWIKPEN- tirzepatide injection, solutionSection 16.1, that the product is available in cartons containing four prefilled single-dose pens, one single-dose vial, four single-dose vials, one multi-dose vial, or one single-patient-use pen, with a multi-dose vial table stating four doses per vial; and section 16.2, that the single-dose pen and single-dose vial can be stored unrefrigerated at temperatures not to exceed 30°C (86°F) for up to a total of 21 days and are then discarded, and that an opened multi-dose vial or single-patient-use pen is thrown away after a total of 30 days at room temperature, 30 days after first use, or after taking four weekly doses, even if there is medicine left in it.
- OZEMPIC- semaglutide injection, solutionSection 16, How Supplied/Storage and Handling: the single-patient-use pen table with its Doses per Pen and Carton Contents columns, in which the carton contents entry names one pen together with a stated number of disposable needles; the separate single-dose prefilled syringe table; and the recommended storage statements that after first use the pen can be stored for 56 days at controlled room temperature or refrigerated, and that the prefilled syringe is stored refrigerated and if needed can be kept from 8°C to 30°C (46°F to 86°F) up to 28 days.
Frequently asked questions
Where does a drug label say how many are in a box?
In the section headed How Supplied/Storage and Handling, printed as section 16. The regulation behind it, 21 CFR 201.57(c)(17), requires the section to state the units in which the dosage form is ordinarily available for prescribing by practitioners, and its own example is bottles of 100. On the injectable products in this category that item appears as a carton table. It names the presentation, the number of units, the total strength per total volume, and a National Drug Code for each configuration.
Do all prescription drug labels have this section?
Not under this particular rule. 21 CFR 201.57 states that its requirements apply only to prescription drug products described in 21 CFR 201.56(b)(1). That paragraph names products whose new drug application, biologics license application or efficacy supplement was approved in a defined window in the mid-2000s, was pending at the end of that window, or was submitted afterwards. Products outside that description are covered by a different section of the regulations. The weight-management and diabetes products discussed here carry the numbered format.
Two products contain the same drug. Why are their storage windows different?
Because the statement is approved for a presentation, not for a molecule. One semaglutide label states an allowance of up to 28 days away from refrigeration for its single-dose pen or syringe before cap removal, and 56 days after first use for its single-patient-use pen. A tirzepatide label states up to a total of 21 days unrefrigerated for its single-dose pen and vial, and a different set of limits for its multi-dose vial. Each figure is tied to a container, so none of them transfers.
Does a room-temperature allowance on a label mean I can leave my medication out that long?
That is a question for the document that came with your product and for the pharmacist who dispensed it. What can be said here is what the labels state, and they state different things for different presentations of the same drug. They also carry conditions alongside the numbers, including directions about freezing, light and keeping the product in its original carton. A summary that drops the conditions is not the same document as the label.
Does a compounded vial have a How Supplied section?
No, because that section belongs to approved labeling and a compounded preparation is not made under an approved application. Nothing requires the four items to be assembled in one place for it. The pharmacy that prepared your specific preparation is the source for what presentation it supplies, how many doses arrive, and what handling directions go with it. Asking for that in writing before the first shipment is reasonable, and a program that will not put it in writing has answered a different question.
Why is a National Drug Code listed in that section?
Because the regulation asks for appropriate information to facilitate identification of the dosage forms, and names shape, color, coating, scoring, imprinting and the National Drug Code number as examples. The code identifies a specific package configuration, which is why a carton table prints a separate one for each pack size and presentation. Note what that does not do. The presence of such a code is an identification device and not a statement about approval or quality.