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Welcome to your GLP-1 guide

Starting a new medication can feel overwhelming, but you don't have to navigate it alone. This guide was created to give you everything you need to feel informed and confident on your GLP-1 journey.

Ashwin Sharma

Dr Ashwin Sharma

Medical Doctor

Injecting Mounjaro

With MedExpress you'll receive 1 Mounjaro pen each month; this pen contains 4 doses. You'll also receive 4 disposable needles and you must use a new one each time you inject.

Preparing and checking your Mounjaro

  1. Remove your medication from the refrigerator and make sure all the items you need are nearby on a clean surface. This includes your medication pen, alcohol swab, sharps bin and disposable needle.

  2. Wash your hands thoroughly with soap.

  3. Pull off the pen cap.

  4. Check your pen for any signs of damage and check that the medication is clear and colourless to slightly yellow in the window of the pen.

  5. Do not use medication if the pen has signs of damage or if the medication is cloudy or discoloured.

  6. Wipe the red inner seal of the pen with one of the alcohol wipes.

  7. Select a needle to use for your injection and check the paper tab and the outer needle cap for damages. If you see any damage, dispose of the needle in a sharps bin as this could affect sterility.

  8. Tear off the paper tab from the needle, then push the needle onto the pen and twist until it's secure.

  9. Remove both caps from the needle, keeping the outer cap for later to safely dispose of your medication.

Priming your Mounjaro pen

  1. Slowly turn the dose knob until you hear 2 clicks and the extended line is shown in the dose window. This is the prime position.

  2. With the needle pointing upwards, tap the cartridge holder gently to collect air bubbles at the top.

  3. Release some medicine into the air by pushing the dose knob in until it stops, then slowly count to 5 while holding the dose knob. A small amount of medicine should come out the tip of the needle and the "0" icon must be shown in the dose window.

  4. If a small amount of medicine is not released, repeat these steps an additional 2 times. After 2 failed priming attempts, replace the needle and try once more.

  5. A visible droplet at the needle tip confirms success. If absent after 3 total attempts (2 with the original needle and 1 with new needle), contact MedExpress.

Choosing an injection site

When choosing an injection site remember to choose one where you can see the pen window and is easily accessible. Our clinical team also recommends rotating your injection sites each time you inject to reduce the possibility of injection site reactions.

  1. Choose an injection site: upper arms, stomach or the front of your thighs.

  2. Clean the site with the alcohol swab provided.

Administering your Mounjaro

  1. Turn the dose knob until it stops and the ‘1’ icon is shown in the dose window.

  2. Position the pen at the injection site at a 90 degree angle.

  3. Insert the needle into your skin and inject the medication by pressing and holding the dose button until "0" appears, then continue holding for 5 seconds to ensure full delivery.

  4. Remove the needle from your skin.

  5. If blood appears at the injection site, press on it lightly with a clean tissue, but do not rub the area.

Disposing of medication

  1. Lead the needle tip into the outer needle cap on a flat surface. Once the needle is covered, carefully push the outer needle cap completely on.

  2. Unscrew the needle and dispose of it in your sharps bin.

  3. Put the pen cap on your pen after each use and store it safely in the refrigerator until your next dose.