Using an Ozempic pen for the first time involves four main steps: attaching a needle, priming the pen, selecting your dose, and injecting. The whole process takes just a few minutes once you understand the sequence, and the pen is designed to be straightforward even if you’ve never given yourself an injection before.
Before You Start: Check the Pen
Take the pen out of the refrigerator and look at the liquid through the pen window. It should be clear and colorless. If the liquid looks cloudy or you can see particles floating in it, don’t use the pen. Before its first use, Ozempic should be stored 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.
Your pen will come with NovoFine Plus needles, which are 32-gauge and only about 4 millimeters long. That’s extremely thin and short, so the injection feels more like a quick pinch than what you might expect from the word “needle.”
Attaching the Needle
Pull the cap off the pen. Tear the paper tab off a new needle and push it straight onto the tip of the pen, then twist it on until it’s snug. Pull off the outer needle cap (save this, you’ll need it later to remove the needle) and then pull off the inner needle cap. You should see a small needle tip exposed. Use a fresh needle every time you inject. Reusing needles increases the risk of blockage, infection, and leaking.
Priming the Pen (Flow Check)
This step is only necessary the first time you use a new pen. Its purpose is to clear any air from the needle and confirm that medication flows properly.
Turn the dose selector until the small flow check symbol lines up with the dose pointer. This symbol sits just past the “0” mark. Hold the pen with the needle pointing straight up toward the ceiling. Press the dose button all the way in and hold it until the dose counter returns to 0. You should see a small drop of liquid appear at the needle tip.
If no drop appears, repeat the process up to six times. Still nothing? Remove the needle, attach a new one, and try the flow check once more. If a drop still doesn’t appear after all of that, the pen may be defective. Discard it and use a new one. Don’t skip this step. It’s the only way to confirm that the medication will actually flow when you inject.
Selecting Your Dose
Turn the dose selector until the dose counter displays the amount your doctor prescribed. For most people starting Ozempic, that’s 0.25 mg. This starting dose is intentionally low. It’s not a full therapeutic dose, but rather a way to let your body adjust to the medication over the first four weeks before increasing to 0.5 mg.
If you accidentally turn past your dose, you can dial backward to correct it. Just make sure the number lines up precisely with the dose pointer before injecting.
Choosing and Preparing the Injection Site
You have three options for where to inject: your abdomen (at least two inches from your belly button), the front of your thigh, or the back of your upper arm. All three areas have a layer of fat just beneath the skin, which is where the medication needs to go.
Rotate your injection spot every week. If you prefer always using your abdomen, that’s fine, but pick a different location within that area each time. Injecting repeatedly in the exact same spot can cause the tissue underneath to harden, which affects how the medication absorbs. Clean the skin with an alcohol swab and let it dry before injecting.
Giving the Injection
Insert the needle into your skin. You don’t need to pinch the skin with these short needles unless your doctor specifically tells you to. Press the dose button all the way in with your thumb. When the dose counter reads 0, keep the needle in your skin and continue holding the button down. Count slowly to six before pulling the needle out. This pause ensures the full dose is delivered and prevents medication from leaking back out of the injection site.
You won’t feel the medication going in. If you see a drop of liquid at the injection site after removing the needle, you may not have held the button long enough. A tiny drop is normal, but if it happens consistently, try holding for a few extra seconds next time.
After the Injection
Without touching the needle, place the outer needle cap back on by pressing the pen tip into the cap on a flat surface. Twist the capped needle off the pen and drop it into a sharps disposal container. These are rigid, puncture-resistant containers designed for used needles. When your sharps container is about three-quarters full, seal it and dispose of it according to your local guidelines. Many pharmacies, hospitals, and community waste programs offer drop-off locations or mail-back options. Never throw loose needles into household trash.
Put the pen cap back on the pen to protect it from light, and store it until your next weekly dose.
Troubleshooting Common Problems
If the dose selector won’t turn, check the simplest explanation first: the pen may be empty. Each pen contains a set number of doses, and the dial locks automatically when the reservoir is depleted. If the pen isn’t empty, the issue could be a blocked needle. Remove it, attach a fresh one, and perform the flow check again. Dropping the pen or rough handling can also damage internal components and jam the mechanism. If a new needle doesn’t solve the problem, the pen itself may need to be replaced.
If you’re unsure whether you received your full dose, do not inject a second time. Wait until your next scheduled injection day. Taking a double dose carries more risk than missing part of one.
Your First Few Weeks
Ozempic is injected once a week, on the same day each week. Pick whatever day is easiest to remember. You can inject at any time of day, with or without food. If you need to change your injection day, just make sure at least 48 hours pass between doses.
The 0.25 mg starting dose lasts for four weeks. After that, your prescriber will typically increase you to 0.5 mg, which can be dialed on the same pen. Nausea is the most commonly reported side effect during the first weeks, and starting at the lower dose is specifically designed to minimize it. Eating smaller meals and avoiding greasy or heavy foods can help while your body adjusts.