GLP-1 Pens and Needles Compared: What Each FDA Label Says About the Device

The question people actually bring to a pharmacy counter is simple: do I need to buy pen needles for this? The FDA labels answer it device by device, and the answer depends on the device far more than on the molecule.

Needle already attached, nothing to buy: the Wegovy single-dose pen and single-dose syringe (the Wegovy label, Section 16, describes the syringes as having integrated needles); the Zepbound and Mounjaro single-dose pens; the Trulicity single-dose pen; the Bydureon BCise autoinjector; and the Ozempic single-dose prefilled syringe, whose IFU walks through inserting the syringe's own needle. All are single-use and are discarded after one injection.

Separate pen needle required, needles included in the carton: the Ozempic multi-dose pen, whose Section 16 carton table lists NovoFine Plus needles with each pen, and the Wegovy FlexTouch single-patient-use pen, whose IFU states NovoFine Plus 32G 4 mm disposable needles are included.

Separate pen needle required, needles not included: the Saxenda pen (its IFU says pen needles are not included and the pen is made for disposable needles up to 8 mm long), the Victoza pen (its IFU directs you to your healthcare provider or pharmacist for information about needles), and the Zepbound and Mounjaro single-patient-use KwikPens (each IFU lists a KwikPen-compatible pen needle as not included). The Zepbound and Mounjaro vials also require a separately supplied syringe and needle. All read via DailyMed, accessed 14 September 2026.

Where a separate needle is used, every one of these labels says the same two things: use a new needle for each injection, and never share the pen with another person even if the needle is changed, because of the risk of transmitting blood-borne pathogens.

Five products in this set are fixed-dose, single-use devices. You do not dial anything, attach anything or prime anything. The label language for each is specific enough to quote.

Wegovy single-dose pen (Novo Nordisk; label revised 06/2026): the IFU states the needle is covered by the needle cover and will not be seen, that the injection starts when the needle cover is pressed firmly against the skin, and that the needle cover locks when the pen is removed. Section 16 says to discard the pen or syringe after use.

Zepbound and Mounjaro single-dose pens (Eli Lilly; both labels revised 8/2026): the IFU describes a gray base cap that is pulled straight off and never replaced, because doing so could damage the needle, then a clear base placed on the skin, a lock ring turned to unlock, and an injection button. The gray plunger becoming visible signals the injection is complete.

Trulicity single-dose pen (Eli Lilly; label revised 3/2026): the IFU calls it a disposable, prefilled medicine delivery device, each pen containing one dose and used one time. After the base cap comes off, a clear base is placed on the skin, the lock ring is turned, the green button is pressed, and a second click marks the needle starting to retract in about 5 to 10 seconds.

Bydureon BCise autoinjector (AstraZeneca; label revised 05/2025, via FDA accessdata): the IFU states it is a single-use, fixed-dose autoinjector that automatically injects, that the needle is hidden before, during and after use, and that a green shield covers the needle once the orange cap is unscrewed. It is the only device here that must be shaken hard for at least 15 seconds and rested flat for 15 minutes before injection, because it is a suspension rather than a solution.

For anyone keeping records, the practical difference is that a single-dose device has no in-use clock. The only storage question is how long it has been out of the refrigerator before the cap came off, which the next sections cover.

Six presentations in this set are multi-dose pens holding several doses in one cartridge. They share a routine the labels describe in near-identical words: attach a new disposable pen needle, check flow or prime as the IFU describes, dial the dose, inject, then remove and discard the needle and store the pen with the cap on and no needle attached.

Ozempic (Novo Nordisk; label revised 05/2026) is described in Section 16 as a single-patient-use pen with multiple weekly doses. The IFU states NovoFine Plus 32G 4 mm disposable needles are included, and that NovoFine Plus, NovoFine or other compatible needles may be used if more are needed. Section 16 adds that the pen must be stored without an injection needle attached and that a new needle is used for every injection.

Wegovy FlexTouch (Novo Nordisk; label revised 06/2026) is the newer multi-dose presentation of semaglutide for weight management, listed in Section 16 as a single-patient-use pen with four weekly doses. Its IFU describes a prefilled, dial-a-dose pen, states NovoFine Plus 32G 4 mm needles are included, and says compatible disposable needles up to 8 mm in length can be used. The label notes it is not recommended for self-administration by those with visual impairment unless the provider determines otherwise.

Saxenda and Victoza (Novo Nordisk; Saxenda Instructions for Use revised 06/2026, Victoza label revised 10/2025) are both prefilled, dial-a-dose, single-patient-use pens. The Saxenda IFU is explicit that pen needles are not included and that the pen is made for disposable needles up to 8 mm. The Victoza IFU tells the reader to ask a provider or pharmacist about needles. Both Section 16 texts instruct storing the pen without a needle attached to reduce contamination, infection and leakage and to preserve dosing accuracy.

Zepbound and Mounjaro KwikPens (Eli Lilly; labels revised 8/2026) are single-patient-use pens holding four weekly doses, with extra volume for priming. Each IFU lists a KwikPen-compatible pen needle as not included, requires priming before every weekly injection, and describes changing the needle if no drop appears after repeated priming. The same labels list multi-dose vials, which need a separate syringe and needle, and single-dose vials, which do too.

If your pen ran out before you expected it to, the reasons usually involve priming volume and dose counting rather than a device fault; that situation has its own page at GLP-1 pen ran out early.

Every injectable GLP-1 device in this set is labeled for refrigerator storage at 2°C to 8°C (36°F to 46°F) before first use. Seven of the eight labels add do-not-freeze and do-not-use-if-frozen wording; the Bydureon BCise Section 16 instead states that the autoinjector must be stored flat, in the original package, protected from light. The instruction not to store the product directly adjacent to the refrigerator cooling element appears only on the four Novo Nordisk labels (Wegovy, Ozempic, Saxenda and Victoza). Wegovy, Ozempic, Zepbound and Mounjaro state original-carton storage to protect from light; Trulicity Section 16.2 says storage in the original carton is recommended. The differences are in the unopened room-temperature allowance, which is the number people most often need when a delivery sits on a porch or a fridge fails.

Wegovy single-dose pen and syringe: Section 16 states that, if needed and 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 Ozempic single-dose prefilled syringe carries the same 28-day, 8°C to 30°C wording.

Zepbound and Mounjaro single-dose pens and single-dose vials: Section 16.2 states each can be stored unrefrigerated at temperatures not to exceed 30°C (86°F) for up to a total of 21 days, after which it is discarded. The unopened Zepbound or Mounjaro KwikPen or multi-dose vial is labeled for use until the expiration date if refrigerated, or 30 days if stored at room temperature up to 30°C.

Trulicity: Section 16.2 states each single-dose pen can be kept at room temperature not to exceed 86°F (30°C) for a total of 14 days.

Bydureon BCise: Section 16 states it can be kept at room temperature not to exceed 86°F (30°C) for no more than a total of 4 weeks, and that it must be stored flat.

Ozempic pen, Saxenda, Victoza and Wegovy FlexTouch: the Section 16 text for each says to refrigerate prior to first use and gives its room-temperature window as an after-first-use figure. The Ozempic storage table puts it in one line: prior to first use, refrigerated until the expiration date; after first use, 56 days. Victoza is the exception, and the figure sits in its Instructions for Use rather than in Section 16: the Victoza IFU states that if the pen is stored outside of refrigeration by mistake prior to first use, it should be used or thrown away within 30 days. Neither the Ozempic, Saxenda nor Wegovy FlexTouch label states a separate unopened room-temperature window in the text read for this page, so this page does not invent one.

All of these are label statements, not permissions. A pen that has been warm for an unknown time is a question for the pharmacist, and the practical decision tree lives at GLP-1 left out of the fridge. For trips, see keeping a GLP-1 cold while traveling.

Once a multi-dose pen has been used the first time, the label starts a clock that runs regardless of how much medicine is left. These are the figures, each from the product's Section 16 or IFU via DailyMed, accessed 14 September 2026.

Ozempic: after first use, the pen can be stored for 56 days at controlled room temperature 15°C to 30°C (59°F to 86°F) or in a refrigerator 2°C to 8°C (36°F to 46°F). The IFU adds that the pen is thrown away after 56 days even if it still has medicine in it.

Wegovy FlexTouch: after first use, store between 59°F to 86°F (15°C to 30°C) or in the refrigerator for up to 56 days; the IFU says to throw it away if it has been frozen, exposed to light or temperatures above 86°F, or out of the refrigerator for 56 days or longer.

Saxenda and Victoza: after first use, each pen can be stored for 30 days at controlled room temperature 59°F to 86°F (15°C to 30°C) or in a refrigerator 36°F to 46°F (2°C to 8°C), and is thrown away after 30 days.

Zepbound and Mounjaro KwikPens and multi-dose vials: once opened, store in the original carton in the refrigerator or at room temperature up to 30°C (86°F), and throw away after a total of 30 days at room temperature, 30 days after first use, or after taking four weekly doses, even if medicine remains.

Three handling rules appear on every one of these labels: keep the pen cap on when not in use, protect from excessive heat and sunlight, and store the pen with no needle attached. Single-dose devices have no in-use clock at all because they are discarded after the one injection.

The number that matters for a record is the first-use date. A pen started on the first of the month has a label-defined last day, and writing that day down is far more reliable than remembering it. Where a device is injected is a separate topic covered in how to rotate GLP-1 injection sites.

Every IFU in this set ends the same way: put the used pen, syringe or pen needle in an FDA-cleared sharps disposal container right away after use, never in the household trash, and follow state or local rules for the container itself. The Ozempic, Zepbound and Trulicity IFUs point to the FDA's safe sharps disposal page for local guidance. Single-dose pens go into the container whole; multi-dose pens contribute a needle per injection and the pen itself at the end of its clock. The practical options, including mail-back programs and what to do while traveling, are on what to do with used GLP-1 pens. Flying with the devices themselves is covered at flying with a GLP-1.

Device details are the kind of record that seems unnecessary until it is needed. When a pharmacy switches you from a single-dose pen to a FlexTouch or KwikPen, the Wegovy, Zepbound and Mounjaro labels all instruct that patients receive training for the new presentation and read its own IFU. A log that records which presentation you were dispensed, the date a multi-dose pen was first used, and any day a device spent outside the refrigerator gives your pharmacist the facts they need to answer the storage question accurately.

GLP-1 Tracker, a free iPhone app, is built for that layer and no more: it logs each dose with its date and site, holds a note per entry where a pen's first-use date or a fridge lapse can be written down, and keeps weight and meals on the same timeline. It does not decide whether a warm pen is usable, does not compute a dose, and does not replace the IFU in the box. Educational and organizational only.