You’ll give yourself one injection a week, on the same day each week, at any time of day, with or without food. Here’s how to use the single-dose pen. Always follow the instructions for use that came with your pen. You can also read the manufacturer’s guide to the Wegovy pen.
Step 1: Check and store your pen
Check your pen. Make sure the pen shows the medication and dose your clinician prescribed. Look through the pen window: the medicine should be clear and colorless, with no particles (air bubbles are normal). Don’t use the pen if it looks like it has been used, if any part of it appears broken (for example, if it has been dropped), if the medicine isn’t clear and colorless, or if the expiration date (EXP) has passed.
Store it. Store the Wegovy single-dose pen in the refrigerator at 36°F to 46°F (2°C to 8°C). Don’t store it in the freezer or directly beside the refrigerator cooling element. Don’t freeze Wegovy, and don’t use it if it has been frozen. Keep the pen in the original carton to protect it from light. If you need to, before removing the pen cap, you can keep the pen at 46°F to 86°F (8°C to 30°C) in the original carton for up to 28 days. Throw the pen away if it has been frozen, has been exposed to light or to temperatures above 86°F (30°C), has been out of the refrigerator for 28 days or longer, or after use. Keep Wegovy and all medicines out of the reach of children. See “How do I store my weight loss medication?” in this help center for more.
Handle it with care. Don’t drop the pen or knock it against hard surfaces, and don’t expose it to any liquids. Keep the pen cap on until you’re ready to inject. The pen won’t be sterile if it’s stored without the cap, if the cap has been pulled off and put back on, or if the cap is missing.
Step 2: Prepare for your injection
Gather your supplies. You’ll need your Wegovy pen, an alcohol swab or soap and water, a gauze pad or cotton ball, and a sharps disposal container for the used pen.
Wash your hands.
Choose your injection site. Wegovy is injected under the skin (subcutaneously) of your stomach (abdomen), thigh or upper arm. Do not inject it into a muscle or a vein. You can inject into your upper leg (the front of the thigh), your lower stomach (keep 2 inches away from your belly button), or your upper arm, as long as you can clearly see the pen window while injecting. Do not inject into an area where the skin is tender, bruised, red or hard, and avoid areas with scars or stretch marks. Change (rotate) your injection site with each injection. You may inject into the same body area each week, but not in the exact same spot each time.
Clean the site. Clean the injection site with an alcohol swab or soap and water. Don’t touch the area after cleaning, and let your skin dry before you inject.
Note: The dose is already set in the pen, and the needle is built in. There’s no needle to attach, nothing to dial and no priming. Each pen contains one dose and is used once, then thrown away. Never share your pen with anyone else.
Step 3: Inject your medication
Pull the cap straight off the pen. The needle is covered by the needle cover, so you won’t see it. Don’t touch or push on the needle cover. You could get a needle stick injury.
Push the pen firmly against your skin and keep pressing. The injection starts when the needle cover is pressed against your skin. Make sure you can see the pen window. If the yellow bar doesn’t start moving, press the pen more firmly against your skin.
Keep pressing until the yellow bar stops moving. The injection takes about 5 to 10 seconds. You’ll hear 2 clicks during the injection.
(a) The first click means the injection has started. The yellow bar in the pen window should start moving.
(b) The second click means the injection is still going. Don’t stop after the second click. Keep pressing the pen firmly against your skin until the yellow bar has stopped moving. If you remove the pen earlier, you may not get your full dose. The needle cover locks when the pen is removed from your skin, and you can’t stop the injection and restart it later.
(c) The yellow bar won’t fill the whole pen window. Once it has stopped moving, the injection is complete.
Slowly lift the pen away from your skin. If blood appears at the injection site, press lightly with a gauze pad or cotton ball.
Note: If the yellow bar doesn’t start moving, or stops during the injection, message your clinician or call Novo Nordisk at 1-833-934-6891. Keep the pen and all its packaging until you’ve spoken with them, and don’t throw it away.
Step 4: Dispose of the pen safely
Put the whole pen in your sharps disposal container right away. If you do not have an FDA-cleared sharps disposal container, you may use a heavy-duty plastic household container, such as an empty laundry detergent container, as an alternative. Do not throw the pen in your household trash or recycling bin.
When the container is about three-quarters full, follow your community guidelines for getting rid of it. Do not put a used sharps disposal container in your household trash unless your community guidelines permit this, and do not recycle it. Disposal rules and programs vary depending on where you live. See “How do I safely dispose of needles?” in this help center for the features a household container needs and for your disposal options.
Who to contact
For anything about how you feel on your medication, a missed dose, or a dose change, message your clinician through the chat on your Dashboard. Reply to the most recent message about your prescription.
For a damaged pen or a replacement, contact your pharmacy.
In an emergency, call 911. If you’re having thoughts of harming yourself, call or text 988.
Sources
This article follows the manufacturer’s instructions for the Wegovy single-dose pen. If you’d like to read them yourself:
Wegovy Prescribing Information, Medication Guide and Instructions for Use (one PDF), Novo Nordisk, revised June 2026
Wegovy Medication Guide, Novo Nordisk, on DailyMed (the FDA’s label library), revised June 2026
How to use the Wegovy pen, Novo Nordisk, updated June 2026
Wegovy Prescribing Information, Novo Nordisk, on DailyMed (the FDA’s label library), revised June 2026
FDA: Best Way to Get Rid of Used Needles and Other Sharps, FDA, updated August 2023
GenMeds checked this article against these documents on October 27, 2026. Your pharmacy’s package insert is always the final word for the medication you were dispensed.