The Wegovy® pen is Novo Nordisk's once-weekly, single-dose injection pen for semaglutide, a GLP-1 medication. It's FDA-approved for chronic weight management in people with obesity or overweight (plus other uses in certain people with cardiovascular disease or fatty liver disease).
It's one of the simplest injection devices you can be prescribed: each pen contains exactly one preset dose, the needle stays hidden the whole time, and there's nothing to dial, prime, or attach. If your first pen just arrived and you're nervous about the first shot, or if you want to confirm you're injecting it correctly, this guide walks through every step in plain language.
Read this first
This is general education, not medical instruction. Always follow the official Instructions for Use that come in your Wegovy® carton and any guidance from your prescribing clinician — they override anything here. If you're unsure at any step, stop and message your provider before injecting.
Before you start
You'll need: your Wegovy® pen, an alcohol swab, and a sharps disposal container. That's it — the needle is built into the pen and never needs attaching, and because each pen is single-use with a preset dose, there is no dial to turn and no priming step.
The steps below are for the Wegovy® single-dose pen, which comes in six dose strengths (0.25 mg, 0.5 mg, 1 mg, 1.7 mg, 2.4 mg, and 7.2 mg). Check the label before every injection to make sure you have the right dose — during dose escalation it's easy to have two strengths in the fridge at once.
Note that Wegovy® is also available as a multi-dose FlexTouch® single-patient-use pen that delivers four 2.4-mg doses. If you're using the FlexTouch®, follow the instructions in your Wegovy® carton instead of the steps below.
Optional: let it reach room temperature
A pen straight from the fridge can sting. While not a required step, letting it sit at room temperature with the cap on before the injection is usually more comfortable. It stays good at room temperature (46–86°F) for up to 28 days — keep it in the original carton to protect it from light.
Step by step
Here's the whole routine at a glance — each step is detailed below.
- Wash your hands. Wash thoroughly with soap and water before handling the pen.
- Check the pen and medicine. Confirm the label shows Wegovy and the dose strength your clinician prescribed, and that it isn't past the expiration date. Look at the liquid through the pen window — it should be clear and colorless. Don't use a pen that looks used or damaged, has been dropped or frozen, or contains cloudy or discolored liquid.
- Choose and clean a site. Choose a different spot than last week, wipe the site with an alcohol swab, and let the skin dry. Inject into the abdomen (at least two inches from the belly button), the front of the thigh, or the back of the upper arm.
- Remove the cap. Pull the cap straight off only when you're ready to inject. The needle stays hidden inside the needle cover — don't touch the cover or press it against anything before the injection.
- Press the pen firmly against your skin. Hold the pen straight against the site at a 90-degree angle and press down firmly. The injection starts automatically — you'll hear a click and see the yellow bar in the window begin to move. You'll hear a second click during the injection.
- Hold until the dose finishes. Keep pressing the pen against your skin until the yellow bar stops moving, usually 5–10 seconds. Lifting the pen early can mean an incomplete dose. If you see blood at the injection site, apply gentle pressure with a cotton ball or gauze.
- Dispose of the whole pen. Lift the pen straight off and place the entire used pen in an FDA-cleared sharps disposal container. Each pen is single-use — never save or reuse one.
Where to inject (and rotating sites)
The three approved injection areas are the abdomen (at least 2 inches from your belly button), the front of the thigh (either thigh), and the back of the upper arm (someone else may need to help you inject there). You can use the same general area each week, but move to a different spot within it — injecting the exact same spot repeatedly can cause lumps or irritation that affect how the medication absorbs.
The dose schedule, briefly
Wegovy® is titrated: treatment starts at the lowest strength and steps up gradually — typically every four weeks — until you reach the maintenance dose your clinician targets. The slow ramp exists to let your body adjust and to keep side effects manageable, so don't skip steps or move up on your own. Your prescriber sets the pace, and it's normal for them to hold a step longer if you're having side effects.
Storing Wegovy pens
- Before use: keep pens refrigerated at 36–46°F, in the original carton to protect them from light. Never freeze a pen — if one freezes, throw it away even after it thaws.
- Room temperature: if needed, an unopened pen can be kept at 46–86°F for up to 28 days in its carton. After 28 days out of the fridge, discard it — returning it to the refrigerator doesn't reset the clock.
- Always: keep the cap on until you're ready to inject, and store pens out of reach of children and pets.
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Go to your patient portal →The two clicks, explained
The Wegovy® pen clicks twice during an injection, and misreading the clicks is the most common reason people stop too early and get a partial dose. Here's what each one means, per Novo Nordisk's official instructions:
- First click — the injection has started. You'll hear it once the pen is pressed firmly against your skin, and the yellow bar in the pen window should start moving.
- Second click — the injection is still going. The second click does not mean you're done. Don't lift the pen after two clicks.
- Done — when the yellow bar stops moving. Keep the pen pressed firmly against your skin until the yellow bar has stopped completely. The whole injection typically takes about 5 to 10 seconds.
- The bar won't fill the entire window — that's normal. When the dose is complete, the yellow bar stops without filling the whole window. A partially filled window after the bar stops is not a sign of a missed dose.
If the yellow bar isn't moving after the first click, press the pen more firmly against your skin. If you see liquid on your skin or medication squirts from the needle area after you lift the pen, you may not have received the full dose — don't inject a second pen to make up for it. Note what happened and message your prescribing clinician for next steps.
Common mistakes to avoid
- Removing the cap early. Take the cap off only when you're ready to inject — the needle cover shouldn't be touched or pressed against anything before the shot.
- Not pressing firmly enough. The pen only starts injecting when it's pushed firmly against your skin. Weak contact means no injection, or a partial one.
- Pulling away too soon. Lifting the pen too early or relying on the clicking sounds can mean an incomplete dose. Hold it down firmly until the yellow bar has stopped moving. It usually takes 5–10 seconds.
- Skipping site rotation. Same-spot injections lead to lumps and uneven absorption.
- Reusing or saving a pen. Each pen is one dose. Once used, it goes in the sharps container — even if it looks like liquid remains.
When to call your provider
Reach out to your clinician if you notice signs of an allergic reaction (swelling, trouble breathing, severe rash), persistent severe abdominal pain (which can signal pancreatitis), a hard lump or infection at the injection site, or if you've missed doses and aren't sure how to get back on schedule. With Pallas, you can message your care team directly without booking a visit.
Using a different device? See our step-by-step guides to the Ozempic® pen and the Zepbound® KwikPen, or the guide to injecting semaglutide — pens and compounded vials.
Frequently asked questions
The Wegovy pen is a single-use autoinjector with a hidden built-in needle — no needle to attach, no priming, no dose to dial. Check the medicine through the window (clear and colorless), pull off the cap, press the pen firmly against your abdomen, front of the thigh, or back of the upper arm at 90 degrees, and keep pressing: the first click means the injection has started and the yellow bar begins moving. Hold the pen in place until the yellow bar has stopped moving completely — typically 5 to 10 seconds — then lift straight off and dispose of the whole pen in a sharps container. The full step-by-step is above in this article.
One. Each Wegovy single-use pen contains exactly one preset weekly dose — you use it once and dispose of the whole pen in a sharps container. A typical monthly supply is four pens. This is different from multi-dose devices like the Wegovy FlexTouch, Ozempic pen, or Zepbound KwikPen, which hold several doses in one pen.
No. The needle is built in and stays hidden before, during, and after the injection, and there is no priming step and no dose to dial — each pen comes preset with your dose. You simply check the medicine through the window, remove the cap, press the pen firmly against your skin, and hold until the dose is delivered.
The first click means the injection has started — the yellow bar in the pen window should begin moving. The second click means the injection is still in progress, not that it's finished. Don't lift the pen after two clicks: keep it pressed firmly against your skin until the yellow bar has stopped moving completely, which typically takes about 5 to 10 seconds in total.
The dose is complete when the yellow bar in the pen window stops moving — note that the bar does not fill the entire window, which is normal and not a sign of a partial dose. If the bar isn't moving after the first click, press the pen more firmly against your skin. If you see liquid on your skin or medication squirting from the needle area after lifting the pen, you may not have received the full dose — don't inject a second pen; contact your prescribing clinician for next steps.
General guidance is that if your next scheduled dose is more than 2 days (48 hours) away, take the missed dose as soon as you remember; if your next dose is less than 2 days away, skip the missed dose and resume your normal schedule. If you miss two or more weeks in a row, contact your provider before restarting — they may adjust your dose. Always confirm with your prescribing clinician, and never take two doses to catch up.
An unopened pen can be kept at 46–86°F for up to 28 days in its original carton. After 28 days out of refrigeration it must be discarded — putting it back in the fridge doesn't reset the clock. Never use a pen that has frozen, even after it thaws.
Both contain semaglutide made by Novo Nordisk, but they're different devices with different FDA-approved uses. The Wegovy single-use pen has a preset dose and a built-in needle, approved for chronic weight management. The Ozempic pen is a multi-dose device approved for type 2 diabetes — you attach a needle, do a flow check on a new pen, and dial each dose. The two are not interchangeable; your prescription determines which you receive.
Pallas dispenses FDA-approved Wegovy through US-licensed pharmacies on a cash-pay basis when a licensed clinician determines it's appropriate; insurance is not billed. Eligibility is always a clinical decision made after a provider reviews your full intake.
References
Device handling, site rotation, storage, and missed-dose guidance follow the FDA-approved Instructions for Use in the Wegovy® prescribing information. Always follow the specific instructions in your pen carton.
- Novo Nordisk. WEGOVY® (semaglutide) prescribing information and Instructions for Use. 2026.
- Novo Nordisk. Wegovy® pen guide and dosing information.
- Snitker S, Egebjerg C, Frederiksen M, Sparre T. Ease-of-use and acceptability of the novel semaglutide 2.4 mg single-dose pen-injector in people with overweight or obesity in the STEP 8 phase III trial. Diabetes Obes Metab. 2022;24(11):2273–2276.
Bottom line: The Wegovy® pen is about as simple as self-injection gets — check the pen, clean a site, press firmly, hold until the yellow bar stops, and dispose of the whole pen in a sharps container. Keep your Instructions for Use handy, rotate sites weekly, and message your provider any time you're unsure.
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