Watching a Mounjaro KwikPen Video Before Your First Injection

What does a Mounjaro KwikPen video actually show you that the leaflet doesn't?

The Patient Information Leaflet is thorough, but diagrams of a pen can only do so much. A video of the Mounjaro KwikPen in use shows the device's real weight in someone's hand, the sound of the cap coming off, and the brief moment of holding the pen still against the skin. Those sensory details matter, especially for anyone who's never self-injected before.

Most instructional videos walk through the same sequence: checking the dose window, attaching (or confirming) the needle, choosing and cleaning the injection site, pressing the pen flat to the skin until the dose window changes, then counting to ten before lifting the pen away. The full KwikPen technique guide covers each of these steps in detail if you want written instructions alongside the video.

One thing videos make particularly clear is the angle. The KwikPen goes on at 90 degrees (flat against the skin, not tilted) and the base (not the cap end) is the part that touches you. People sometimes tilt it, thinking it behaves like a traditional syringe. It doesn't. You can watch all of this demonstrated in our Mounjaro injection video, which shows the correct technique from start to finish in a way that text rarely manages.

Eli Lilly, the manufacturer, publishes official injection instruction videos on their UK-facing Mounjaro pages. The NHS medicines page for tirzepatide also links to patient-facing resources and summarises what to do if something doesn't go to plan.

How do you prepare before pressing play on a how-to-inject Mounjaro KwikPen video?

Watching the video is most useful when you have the pen in front of you. Take your KwikPen out of the fridge about 30 minutes before your planned injection time, the medicine is more comfortable at room temperature, and the pen is easier to hold. Many people find it helpful to lay everything out on a clean surface: the pen, a fresh needle (if your device uses a separate one), an alcohol swab for the injection site, and something for sharps disposal afterwards.

Our alcohol swabs and a 1-litre sharps container are available directly from the pharmacy if you need them.

Check the dose window before you do anything else. The window should show the dose you're expecting, if you're on 5mg, you should see 5mg, not 2.5mg or a blank. The pen sizes and doses guide explains which pen colour corresponds to which strength, which matters when you're in the middle of a titration and unsure whether the pen you've picked up is the right one.

A practical note: if you inject on the same day each week (say, a Thursday evening after work) building it into a routine means you're less likely to inject in a rush. A handful of patients tell our prescribers they were watching a how-to video on their phone while the kettle boiled, which is a perfectly reasonable way to do it, so long as you're not trying to hold the pen at the same time.

What should you look out for when the injection is done?

After lifting the pen away, the needle retracts automatically, you won't need to handle it. The dose window will have advanced to show the next dose. Some people notice a tiny spot of blood or a small red mark at the site; that's normal and usually fades within a few minutes. You don't need to rub the area.

If the dose window hasn't changed after you've completed the injection, it's possible the pen wasn't held flat against the skin firmly enough, or you lifted it before the ten seconds were up. Our guide to what to do when the pen doesn't click explains how to check whether a dose was delivered and when to contact your prescribing team rather than attempting a second injection.

Common side effects in the first few weeks are mostly gastrointestinal, nausea, loose stools, or some reflux are all reported frequently, particularly after a dose increase. They tend to ease as your body adjusts. If you experience severe and persistent stomach pain, especially pain that radiates toward your back, seek medical attention promptly rather than waiting to see if it settles; this is the symptom profile associated with pancreatitis, which the MHRA flagged in a Drug Safety Update for GLP-1 medicines as a known though uncommon risk. Any suspected side effects can be reported via the Yellow Card scheme.

What's the difference between the KwikPen and other injection devices, and does it change what you're watching for in a video?

Tirzepatide in the UK is only available as the KwikPen; there is no vial or alternative delivery format licensed here. That means any how-to-inject Mounjaro KwikPen video you watch should be showing this specific device, a cylindrical auto-injector pen, usually in a colour-coded outer sleeve matching the dose strength.

It's worth being aware that videos produced for other markets may show slightly different packaging or pen designs. Eli Lilly's KwikPen for the UK is the one referenced in the Mounjaro KwikPen overview, and the technique described there aligns with the UK SmPC. If you're ever unsure whether an online video reflects the exact UK pen and process, the Patient Information Leaflet that comes in the box is the definitive reference.

If you're still deciding whether tirzepatide is the right treatment for your situation, the weight-loss treatments overview sets out how it compares to other licensed options, and the full Mounjaro guide covers eligibility, evidence and what the treatment journey typically looks like. For anything specific to your prescription, our clinical team (led by our clinical director) is available for aftercare seven days a week.