What is Mounjaro®?

Mounjaro® KwikPen (tirzepatide) is an injectable weight loss drug. Mounjaro® acts in a similar way to a natural hormone in the gut. It helps to control your appetite and make you feel fuller. This, when paired with a reduced calorie diet and increased physical activity, results in effective, healthy weight loss.

How to use Mounjaro®?

Mounjaro® is an injectable medication that comes in a pre-filled pen. It needs to be used once weekly, on the same day. The pen itself is simple to use and the needles are very small, so it’s relatively pain-free and easy to get used to.

Mounjaro® can be injected in the abdomen, thigh or upper arm at any time during the day, with or without food. It’s recommended that you use it around the same time each week — this will regulate the medication’s effectiveness. 

You’ll receive clear instructions with your first order on the specifics for applying your treatment confidently. Our team are also on hand to answer any questions.

Who can use Mounjaro®?

Mounjaro® (tirzepatide) is an injectable weight loss drug for people with a BMI over 30. For individuals with weight related health concerns, they may be eligible with a BMI over 27. These related concerns include high blood pressure, diabetes, heart disease and raised cholesterol.

If you have Type 2 diabetes and a BMI less than 27, we can’t prescribe you Mounjaro® for weight loss.

How to calculate your dosage?

Your treatment starts at a low dose and then increases every four weeks. When you first start using Mounjaro®, the starting dose is 2.5 mg, once a week, for four weeks. The dose will then be increased after every four weeks until you reach the recommended dose of 15 mg a week.

This chart shows how your dosage will increase over five months:

The clinical team will review your weight with every order to ensure this product is working for you. This way we can ensure the dose which you peak at is optimal for you. At this peak, for us to continue prescribing Mounjaro® to you, you’ll need to have lost around 5% of your initial body weight after a period of time.

Mounjaro® is one of the most effective weight loss treatments available. Patients lose 20.9% body weight on average over 36 weeks and lose 25.3% body weight on average over 88 weeks.

The active ingredient has been shown to be more than twice as effective for weight loss versus the popular weight loss drug, Semaglutide, found in Wegovy and Ozempic.

First time orders

When you order Mounjaro® for the first time, we'll provide you with 1 pen that includes each of your 4 doses for your first 28 days of treatment. It's important to store it in a refrigerator between 2–8°C. Mounjaro® comes in a single-dose pen that requires no mixing. You will also receive:

• A sharps bin with your first order
• 4 needles. One to use for every time you inject
• Swabs to clean the skin area prior to injecting
• An instruction leaflet
• Extra tips that can help you lose weight

To get started, complete a consultation for an injectable weight loss pen and select the lowest dose.

With each subsequent order, you will receive the next pen at the required strength.

How to re-order Mounjaro®?

When you’ve been using Mounjaro® for 3 weeks, it’s time to think about ordering your next pen from us. At this time, we’ll send you a reminder to log on and complete a weight loss consultation. 

If you’re responding well to treatment, at the next order you can increase your dose. We will then send you an additional pen in a temperature-controlled delivery packaging. It’s important to store these in a refrigerator between 2–8°C. This pack will last you 28 days. After you finish your 3rd pen, remember to return to MedExpress to reorder supplies so you can continue treatment uninterrupted.

The clinical team will review your weight with every order to ensure this product is working for you. When you have used your highest tolerated dose for 6 months, we will review your progress. For us to continue prescribing Mounjaro® to you, you’ll need to have lost around 5% of your initial body weight.

Your health and well-being are our top priority, so please reach out to the MedExpress clinical team if you have any concerns while taking Mounjaro.

Where to dispose Mounjaro® pens?

You’ll receive a sharps bin with your first order. This is a special waste bin that’s used to store sharps material, like needles, until it can be safely disposed of. After each administration, dispose of the needle into the sharps bin. After the 4 doses, and once the needle has been removed, the pen can be disposed of in your household waste or the sharps bin. When full, your sharps bin can be collected for disposal by your local council. Once you’ve started treatment, you’ll be able to purchase further sharps bins with new orders.

About your Mounjaro® delivery

Mounjaro® can be kept unrefrigerated for up to 21 days. However, we recommend you return the pen to the fridge after each use. Remove the needle after each use and use a new needle for every injection.

Like all medicines, Mounjaro® can cause side effects, including nausea, vomiting, constipation and diarrhoea. Not everybody experiences them, but if you do, they usually settle after a few weeks once you get used to the medication. One of the reasons for the gradual increase in medication every four weeks is to give your body the chance to tolerate the medication so that these side effects are less likely to happen or be less problematic.

In very rare cases, it’s thought that Mounjaro® KwikPen can increase gallstone disease. Rarely, it’s possible that it can cause pancreatitis, hypoglycaemia (low blood sugar) and serious allergic reactions / anaphylaxis. Patients with diabetic retinopathy may have changes in vision after starting Mounjaro®.

If you develop abdominal pain, severe stomach problems or severe dehydration whilst taking this medication, you should seek medical advice immediately and advise that you are using this medication.

If you develop signs of an allergic reaction, such as difficulty in breathing, rash, swelling of the face, lips or tongue, then you should also seek help immediately.

Please refer to the patient information leaflet for more information regarding side effects.

The Mounjaro® pen system is very easy to use and virtually painless. However, we understand injections aren’t for everyone, so we also prescribe weight loss treatments in tablet form.