Giving yourself an Ozempic injection is straightforward once you know the steps. You’ll use a prefilled pen to inject the medication just under the skin of your abdomen, thigh, or upper arm, once per week on the same day. The entire process takes about two minutes, and the included 32-gauge needle is thin enough that most people feel little more than a slight pinch.
Before Your First Injection
Each Ozempic pen comes with a set of single-use 32-gauge, 4 mm needles. These are among the thinnest pen needles available, which helps minimize discomfort. Use a new needle every time you inject. Never reuse or share needles.
Before your first use, store the pen in the refrigerator between 36°F and 46°F. Once you’ve used the pen for the first time, you can keep it either in the fridge or at room temperature (59°F to 86°F) for up to 56 days. After 56 days, discard the pen even if medication remains inside. Never freeze the pen, and don’t inject it if the liquid looks cloudy or has particles in it.
How to Prime a New Pen
Every time you start a new pen, you need to run a “flow check” to confirm the medication is flowing through the needle. This only needs to happen once per new pen, not before every injection.
- Attach a new needle. Pull off the pen cap, then screw a new needle onto the tip. Remove both the outer and inner needle caps.
- Dial to the flow check symbol. Turn the dose selector until the dose counter displays the small flow check symbol (it looks like two drops or dashes, depending on your pen version).
- Press the dose button. Hold the pen with the needle pointing up. Press and hold the dose button until the counter returns to 0. You should see a small drop of liquid form at the needle tip. If no drop appears, repeat the process up to six times. If there’s still no drop, change the needle and try again.
Step-by-Step Injection Process
Once your pen is primed (or if you’re using an already-in-use pen with a fresh needle attached), follow these steps:
1. Dial your dose. Turn the dose selector until the counter displays your prescribed dose, whether that’s 0.25 mg, 0.5 mg, 1 mg, or 2 mg. A dashed line in the counter window guides you to the correct setting. Make sure the number lines up exactly with the dose pointer on the pen. You’ll hear a click at each dose stop.
2. Choose and clean your injection site. Pick a spot on your abdomen (avoiding the area directly around your belly button), the front of your thigh, or the back of your upper arm. Wipe the area with an alcohol swab and let it air dry.
3. Insert the needle. Pinch a fold of skin at your chosen site. Push the needle straight into the skin fold at a 90-degree angle.
4. Deliver the dose. Press the dose button all the way in and hold it. Keep the needle in your skin until the dose counter reads 0. Once it reaches 0, slowly count to six while continuing to hold the button down. This ensures the full dose is delivered rather than leaking out.
5. Remove and dispose. Pull the needle straight out. You may see a tiny drop of liquid at the injection site or on the needle tip, which is normal and doesn’t mean you lost part of your dose. Place the outer needle cap back on, unscrew the needle, and drop it directly into a sharps container.
Where to Inject and How to Rotate Sites
Your three options are the abdomen, thigh, and upper arm. The abdomen tends to be the most popular choice because it’s easy to reach and has a generous area to work with. If someone else is giving you the injection, the upper arm becomes a more practical option.
Rotating your injection site each week is important. Injecting repeatedly into the same spot can cause lipohypertrophy, a lump of fatty tissue that forms under the skin. These lumps aren’t just cosmetic. They can change how consistently your body absorbs the medication, potentially making doses less predictable. Space each injection at least a finger’s width from your last spot. You can stay within the same general region (like the abdomen) but move around within it, or you can alternate between regions entirely.
A simple approach: pick four or five spots within one area and cycle through them in order. Some people track their rotation on a calendar or a note on their phone. Before each injection, feel the skin at your chosen spot. If you notice any thickened, rubbery, or lumpy areas, skip that site and move to a different one.
What to Do If You Miss a Dose
If you miss your scheduled injection day, take the dose as soon as you remember, as long as it’s been five days or fewer since you were supposed to inject. Then return to your regular weekly schedule. If more than five days have passed, skip the missed dose entirely and just take your next dose on the usual day. Don’t double up to make up for it.
Needle Disposal
Used needles go into a sharps disposal container immediately after each injection, not into the regular trash. You can buy FDA-cleared sharps containers at most pharmacies, or use a heavy-duty plastic household container (like a laundry detergent bottle) with a tight-fitting lid. Fill the container no more than three-quarters full.
When the container is ready for disposal, check your local options. Many communities offer drop-off sites at pharmacies or hospitals, household hazardous waste collection events, or mail-back programs. Your local health department or trash removal service can tell you exactly what’s available in your area. Never throw loose needles into the trash or recycling bin.