Mounjaro®
How it works
Simple steps to start your journey
Choose your treatment
Select your preferred pen, complete your purchase, and create your account securely in minutes.
Complete medical form
Fill out a quick medical questionnaire so our GMC-registered GPs can ensure the treatment is right for you.
Receive your medication
Once your form is approved by a GP, your medication is dispensed and shipped discreetly to your door.
Mounjaro® - Tirzepatide
Select pen:
4 week supply
Inc. postage and packaging
Purchasing will take you to an online assessment. Once completed a doctor will review this and authorise your medication electronically if safe to do so.
How much weight could you lose?
Individual results may vary but on average studies have shown 15-22.5% weight loss up to 72 weeks after starting treatment. We recommend diet and exercise as part of the weight loss journey.
What does the pen look like?
A removable cap can be seen on the left of the pen to which a needle is attached. The dial is located at the top of the pen. Full instructions on how to use the pen can can be seen by clicking here. Please note with each order you will receive 5 needles, 5 alcohol wipes and a sharps box for safe disposal.
How should I store the pen?
Keep Mounjaro® in the original packaging to protect from sunlight. Store it in the refrigerator from 2 °C to 8 °C. You can take the pen out of the refrigerator to let it reach room temperature before using it.* Leave the cap on until you’re ready to inject. Do not freeze. Throw away pen if Mounjaro® has been frozen,
How should I dispose of the pen?
A sharps box is included as part of your order. Place the used pen into the sharps disposal box and return to any nearest pharmacy once full. Do not throw away into household refuse bins.
Am I eligible for this injection?
- BMI of 30 or above
- BMI of 27 or above with weight-related conditions
- Committed to lifestyle changes
- Not pregnant or breastfeeding
You may be eligible for this injection if you have:
You will be asked to fill in a medical form which is reviewed by a doctor before a prescription is issued.
What are the side effects of Mounjaro?
You may experience side effects initially when commencing treatment or when increasing the dose. If you experience any unwanted side effects that you are concerned about please contact a doctor. Drinking water, having lighter meals and giving time to get used to the medication may help. In some cases the dose may need to be reduced.
Common or very common
Alopecia (hair loss); appetite decreased; asthenia; burping; constipation; diarrhoea; dizziness; gastrointestinal discomfort; gastrointestinal disorders; hypersensitivity; hypotension; lethargy; malaise; nausea; vomiting
Uncommon
Gallbladder disorders; pancreatitis acute; taste altered
Rare or very rare
Angioedema
Can I switch between Wegovy and Mounjaro?
It is possible to switch between the two. We recommend a gap of one week (7 days) between the last dose. See our charts below outlining the possible switches. You can request the new pen via the platform. Simply login to your account to do this. If you are new to us you can register on our platform. If you wish to speak with a GP at any point, please book a consultation online.
Wegovy
toMounjaro
Conversion Chart
Mounjaro
toWegovy
Conversion Chart
What should I do if I miss a dose?
If a dose is more than 4 days (96 hours) late, the missed dose should not be taken and the next dose should be administered at the normal time. If a dose is less than 4 days late, take the dose as normal. If more doses of Mounjaro® are missed, consider re-starting at a reduced dose.
I am taking the pill. Will using a GLP-1 agonist like Mounjaro® affect my contraception?
If you are using Mounjaro® (tirzepatide) you should use a barrier method of contraception (e.g. condoms) in addition to your pill for four weeks after starting the medication, and for four weeks after any increase in dose. This is because tirzepatide works slightly differently to the other GLP-1 agonists. Alternatively, you may wish to consider another (non-oral) method of contraception whilst using tirzepatide.
When should I stop using Mounjaro®?
You can stop Mounjaro at any point, usually this is once you have achieved your ideal goal in weight or target and have been stable for several months. You may also wish to come off of this if you are struggling with the side effects of this medication. The most common side effects are often related to the digestive system. Please contact a doctor on our platform at any point if you are experiencing problems or need support with coming off this medication.
How should I stop using Mounjaro®?
We recommend coming off of Mounjaro using a gradual tapered approach. This means reducing each dose slowly, across 4 weeks, before dropping to the next lower dose. The plan may be different for you and can be reviewed by discussion with a GP on our platform. The whole time to come off the medication could take around 3-6 months (depending on the dose that you are taking) if following a gradual tapering approach.
In some instances it can be stopped suddenly but only if you doctor has advised this.
Who should I contact regarding deliveries?
If you have any queries regarding a delivery or need assistance with a delivery, please contact our pharmacy partner by email at support@signaturepharmacy.co.uk or alternatively by phone on 0330 111 0440. Their opening hours are Monday to Friday 0900-1800 and weekends from 0900-1500.
Is there a cut off for next day delivery?
Please note - your medical questionnaire has to be reviewed first by a doctor, which will usually happen on the same day. Following this, if there are no issues raised, the prescription will be issued. If the prescription is issued by 1600 then a next day delivery is possible.
The ice is melted in the box, can I still use the medication?
Medications are packed securely. During summer, we use two ice packs, and during winter, one ice pack. This packaging has been tested in both seasons and keeps the medication within the required temperature range for 48–72 hours, and for more than 72 hours in winter.
We provide next-day delivery. If there is a delivery delay and the medication arrives with melted ice packs, it is still safe to use if it has been delivered under 5 days, provided the temperature has remained below 30°C for up to 30 days.
If a delivery takes five days or longer, please contact our pharmacy partner by phone on 0330 111 0440 or by email at support@signaturepharmacy.co.uk
Can I have Mounjaro with HRT?
Yes you can. However it is advisable to discuss this with one of our GPs as we may recommend switching your hormone replacement therapy to a transdermal route / mirena coil. This is because Mounjaro slows emptying of the stomach, which could affect the absorption of your HRT medication. In turn this could mean insufficient endometrial protection.