It depends on the pen. Ozempic, Saxenda and Victoza are multi-dose pens that require a separate pen needle, purchased at the pharmacy, screwed on before each injection and removed afterward. Wegovy and the single-dose Mounjaro and Zepbound auto-injector pens have a needle built in and fully hidden inside the device, so nothing separate needs to be attached, and you discard the whole pen after one use. Rybelsus is an oral tablet and uses no needle at all. Whichever product you're on, never reuse a needle or share a pen, and always follow the specific instructions that came with your medication.
Key takeaways
- Ozempic, Saxenda and Victoza need a separate pen needle attached before each dose and removed after.
- Wegovy and single-dose Mounjaro/Zepbound pens have a hidden needle already built in, nothing to attach.
- Rybelsus is a pill, no needle involved.
- Never reuse a needle or share a pen, even with the needle changed, and dispose of sharps in an approved container.
Which GLP-1 pens need a separate needle?
This is the single most common point of confusion for people newly starting a GLP-1, and it's easy to see why: the products all look similar in a pharmacy bag, but their mechanics differ.
- Ozempic is a reusable-style, multi-dose pen (one pen delivers several weekly doses, depending on the prescribed strength). You attach a new pen needle before every injection and remove and discard it afterward, storing the pen itself without a needle attached between uses.
- Saxenda and Victoza (liraglutide) work the same way, multi-dose pens that require a separate pen needle attached before each injection.
- Wegovy comes as a single-dose, prefilled pen with the needle fully concealed inside the device. You never see or attach a needle; you press the pen against the skin, it delivers the dose, and you discard the entire pen afterward.
- Mounjaro and Zepbound are most commonly dispensed in the US as single-dose auto-injector pens with a hidden needle built into the base, working much like Wegovy's pen; no separate needle purchase is needed. (Both are also available as vial-and-syringe kits in some cases, which do require separately dispensed syringes and needles, so check which format your pharmacy filled.)
- Rybelsus is an oral semaglutide tablet, swallowed on an empty stomach with a small amount of plain water; there's no needle at all.
| Product | Pen type | Separate needle needed? |
|---|---|---|
| Ozempic | Multi-dose pen | Yes, attach before each injection |
| Wegovy | Single-dose pen | No, needle is hidden inside |
| Mounjaro (auto-injector) | Single-dose pen | No, needle is hidden inside |
| Zepbound (auto-injector) | Single-dose pen | No, needle is hidden inside |
| Saxenda | Multi-dose pen | Yes, attach before each injection |
| Victoza | Multi-dose pen | Yes, attach before each injection |
| Rybelsus | Oral tablet | No, not injected |
If your pen requires a separate needle, your pharmacist typically dispenses compatible pen needles (commonly sold under brand names like NovoFine or NovoTwist) alongside your prescription, but it's worth confirming you actually have needles on hand before your first dose is due, since they aren't always automatically included in every fill. For where on the body to inject, see our injection site guide.
Getting your supplies together before your first dose
New prescriptions can be confusing at pickup, especially if the pharmacy doesn't spell out what's separate and what's already in the box. Before your first injection is due, it helps to lay out everything you'll need and confirm you actually have it:
- The pen or pens for your current fill, checked to make sure the strength matches your prescribed dose.
- Pen needles, if your product requires them (Ozempic, Saxenda, Victoza), in the size your prescriber or pharmacist recommends. Ask specifically whether these were included in your fill or need to be requested separately, pharmacies handle this differently.
- Alcohol wipes or a way to clean the injection site, and a clean, dry surface to work on.
- A sharps container, ready before you need it, not something to figure out after the first injection.
If anything is missing or you're unsure how your specific pen works, ask the pharmacist to walk through it at pickup. Most pharmacies are used to this question and can demonstrate the mechanics in a couple of minutes, which is far easier than working it out alone at home for the first time.
Storage basics
Storage requirements vary by product and change slightly once a pen is in use, so this is a general orientation, not a substitute for your specific label:
- Before first use, GLP-1 pens are generally refrigerated (roughly 36-46°F).
- Once in use, most products allow a defined window at room temperature (below about 86°F) before they must be discarded, commonly in the range of about three to eight weeks depending on the specific product.
- Some products, once removed from the fridge, cannot be returned to refrigeration and must be used within their room-temperature window or discarded.
- Never use a pen that has been frozen, exposed to direct heat or sunlight, or that looks discolored or contains particles.
Because exact day-counts differ by product and can be updated, always check the storage section of your specific medication's package insert or ask your pharmacist rather than relying on a general rule.
Do not reuse needles or share pens
Safe needle and sharps disposal
Used needles and single-dose pens are medical sharps and need to be handled accordingly. The FDA recommends dropping them immediately into an FDA-cleared sharps disposal container. If you don't have one, a sturdy household alternative, a heavy-duty plastic container with a tight, puncture-resistant lid, clearly labeled as sharps waste, is an acceptable substitute until it's full. Never toss loose needles or pens into household trash or recycling, and never flush them. Many pharmacies, hospitals and local household hazardous waste programs accept full sharps containers for proper disposal; check your city or county's guidance, since collection programs vary by location.
Frequently asked questions
Do GLP-1 pens need needles?
It depends on the product. Ozempic, Saxenda and Victoza are multi-dose pens that require a separate pen needle, sold by the pharmacy, attached before each injection and removed after. Wegovy and the single-dose Mounjaro and Zepbound pens have a needle built in and hidden inside the device, so nothing separate needs to be attached. Rybelsus is a pill and uses no needle at all.
What injection supplies do GLP-1 drugs use?
For pens requiring a separate needle, you need pharmacy-dispensed pen needles compatible with your specific pen, an alcohol wipe or clean skin, and an FDA-cleared sharps container for disposal. For single-dose hidden-needle pens, you just need the pen itself and a sharps container to dispose of the whole pen after use.
Are Ozempic and Wegovy pens different?
Yes. Ozempic is a multi-dose pen, roughly four weekly doses per pen, that requires you to attach a new separate pen needle before each injection and remove it after. Wegovy is a single-dose pen with a needle fully concealed inside the device; you never attach or see a needle, and you discard the whole pen after one injection.
How do I dispose of GLP-1 needles safely?
The FDA recommends placing used needles and single-dose pens immediately into an FDA-cleared sharps disposal container. If one isn't available, use a heavy-duty, puncture-resistant household container with a tight lid, labeled as sharps waste, and never place loose needles in household trash or recycling, or flush them.
Sources & further reading
- DailyMed: Ozempic (semaglutide) prescribing information and instructions for use
- DailyMed: Wegovy (semaglutide) prescribing information
- DailyMed: Zepbound (tirzepatide) prescribing information
- DailyMed: Saxenda (liraglutide) prescribing information
- FDA: The Best Way to Get Rid of Used Needles and Other Sharps