How the Wegovy pen works
The Wegovy pen is a pre-filled device that delivers medication in four fixed doses. You use it once a week for four weeks.
The injection is given under the skin. You can inject into your stomach, thigh, or upper arm.
Each pen comes with:
4 NovoFine Plus needles, one for each dose.
A sharps bin for safe disposal.
What the pen should look like after each dose
After you press and hold the dose button, the dose counter should return to 0. You will also see the plunger move down the clear window, showing that medication is being delivered.
After all four doses have been used, the pen will not allow you to turn the dial again. Even if a tiny drop of liquid remains in the window, the pen is empty and should be disposed of.
How do I use the pen?
See the instructional video below for a step-by-step guide:
Why can’t I twist the dose knob?
If the dial is difficult to turn, it is usually because:
The pen is empty: Wegovy pens lock after the fourth dose. A small amount of remaining liquid is a buffer used to ensure there was enough medication to prime the pen.
There is insufficient medication: Performing too many flow checks or storing the pen with a needle attached can cause medication to run out before the fourth dose.
The button is already pressed: Check that the dose button at the end hasn’t accidentally been pushed in.
The mechanism is stuck: Gently wiggle the dial back and forth. The internal plastic gears may need a small nudge to release.
Why can’t I push the dose button in?
If the button won’t move or you feel springy resistance, the medication may be blocked. Possible causes include:
The needle caps are still on: Remove both the large outer cap and the small inner needle cover.
A blocked needle: A reused needle, or a pen stored without its cap, can become clogged with dried medication.
Improper attachment: The needle may be crooked and may not have pierced the rubber stopper correctly.
How to fix a pen that won’t press in
Do not use force. Forcing the button can break the internal spring or damage the pen seal.
Stop immediately: Pull the needle away from your skin.
Remove the needle: Unscrew it and place it in your sharps bin.
Check the pen top: Inspect the rubber seal to ensure it isn’t torn.
Attach a new needle: Screw on a fresh needle straight and firmly.
Remove both caps: Take off the clear outer cap and the inner needle cover.
Check the flow: Turn the dial to the flow-check symbol and press the button. A drop should appear at the needle tip.
Administer: Dial your full dose and try again.
Why a pen can become damaged
The Wegovy pen uses a spring-loaded mechanism. Pressing the button while the needle is blocked can cause the pen to fail internally.
Check the grey rubber seal at the top of the pen for:
Bulging: The seal looks swollen or pushed outwards.
Leaking: Liquid comes from the sides of the seal rather than through the needle.
⚠️ If the seal is damaged or the pen is leaking from the top, stop using it. The pen may not deliver the correct dose and will need to be replaced. If the button feels stiff or jammed, change the needle rather than pushing harder.
Still having trouble?
If you have followed these steps and suspect the pen is damaged beyond repair, contact Customer Care.
Do not dispose of the pen until Customer Care has investigated the issue and offered a resolution. Keep the pen in a safe place, out of reach of children and animals. The team can review the situation and discuss the available options.