The Wegovy® pen is Novo Nordisk's once-weekly, single-dose injection pen for semaglutide, FDA-approved for chronic weight management. 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, 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.
Wegovy® comes in five dose strengths (0.25 mg, 0.5 mg, 1 mg, 1.7 mg, and 2.4 mg), and the pens you receive match your current step on the schedule your clinician set. Check the label before every injection — during dose escalation it's easy to have two strengths in the fridge at once.
Step by step
- 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.
- Let it reach room temperature. A pen straight from the fridge can sting. Letting it sit out with the cap on for the time noted in your Instructions for Use makes the injection more comfortable.
- Choose and clean a site. Inject into the abdomen (at least two inches from the belly button), the front of the thigh, or the back of the upper arm. Move to a different spot than last week, wipe the site with an alcohol swab, and let the skin dry.
- 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.
- Hold until the dose finishes. Keep pressing the pen against your skin until the yellow bar stops moving, then continue holding for the full count in your Instructions for Use. Lifting the pen early can mean an incomplete dose.
- 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 unused 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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Start your intake →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 before the yellow bar stops moving can mean an incomplete dose. Hold it down for the full count in your Instructions for Use.
- Injecting cold medication straight from the fridge. Letting the pen warm up first (cap on) is more comfortable and can reduce stinging.
- 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
One. Each Wegovy pen is a single-use device containing 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 Ozempic pen or the 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.
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 unused 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 pen is single-use with a preset dose and a hidden 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.
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.
Have questions about your treatment?
A licensed Pallas provider can review your plan and answer dosing questions — usually by message, no appointment required.
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