You can switch from Ozempic to Mounjaro because Ozempic is not a weight loss injection. However, Mounjaro has recently been approved to treat chronic weight management in the UK.
Ozempic is licensed to treat type 2 diabetes and if you’re using it off-label for weight loss, it’s time to consider other weight loss injections such as Mounjaro and Wegovy.
Switching from one medication to another is not as simple as you might think. It should be done after consulting with your healthcare provider. In this comprehensive guide, you will get to know some important factors to consider before switching from Ozempic to Mounjaro, dosage schedules, and which medicine is right for you.
Mounjaro is a new weight loss injection launched in 2024. It is a prescription-only medicine used to treat chronic weight management and type 2 diabetes.
It works by activating two receptors, GIP and GLP, simultaneously, helping you eat less and making it easier to lose weight. Moreover, the active ingredient, Tirzepatide, also makes insulin work better in controlling sugar levels and reducing fat.
Get Mounjaro Private Prescription
Ozempic is a prescription-only injection licensed to treat type 2 diabetes but has gained popularity for its effectiveness in promoting weight loss. That is why it is used off-label in the UK for weight loss. It also lowers the risk of heart attack and stroke in people with type 2 diabetes and heart disease
It mimics the incretin hormones, which help regulate blood sugar levels and insulin secretion.
The basic reason for switching from Ozempic to Mounjaro is its eligibility criteria. Ozempic is licensed for type 2 diabetes; Mounjaro is licensed for weight loss.
Studies show that Mounjaro helps people lose more weight than Ozempic. The strongest dose of Mounjaro can lead to nearly twice as much weight loss as Ozempic in 40 weeks.
You can obtain a private prescription for Mounjaro if your BMI is 30 or above, or if your BMI is 27 and you have a weight-related health condition such as type 2 diabetes, high blood pressure, or high cholesterol.
In a randomised clinical trial, 1,867 individuals with type 2 diabetes were compared to see how well different doses of Mounjaro (5 mg, 10 mg, and 15 mg) worked compared to Ozempic 1 mg.
The study found that after 40 weeks:
– Ozempic led to an average weight loss of 6.7%.
– Mounjaro 5 mg led to 8.5% weight loss on average.
– Mounjaro 10 mg led to 11% weight loss on average.
– Mounjaro 15 mg led to 13.1% weight loss on average.
These results suggest that Mounjaro can lead to more weight loss than Ozempic, especially at higher doses.
There are some critical factors to consider before switching between Ozempic and Mounjaro.
Before making any changes to your medication regimen, it is essential to consult with your healthcare provider. They can provide personalised advice based on your medical history and current health status.
Ozempic and Mounjaro have different strengths and mechanisms of action. For example, Ozempic has 3 strengths, starting from 0.25mg and titrating up to 1mg. On the other hand, Mounjaro has 6 strengths, starting from 2.5 mg, and 3 maintenance dosages: 5 mg, 10 mg, and 15 mg.
Ozempic and Mounjaro are both once-weekly injections. When switching from Ozempic to Mounjaro, you have to consider your current dosage. For example, if you’re currently taking 1mg of Ozempic and considering switching to Mounjaro, you have to start with its minimum dosage, which is 2.5mg.
In some cases, your healthcare provider might advise you to switch to 5 mg. Your provider will determine which dosage is safe for you to transition to.
Like any medication, Ozempic and Mounjaro have some common side effects.
– Abdominal pain
– Constipation
– Diarrhea
– Nausea
– Vomiting
These side effects are usually mild and tend to diminish as your body adjusts to the medication.
It’s important to get rid of Semaglutide from your body before switching to Tirzepatide. Ozempic takes about 5 weeks after your last dose to leave your system completely.
For instance, If you injected Ozempic on Friday of a particular week, you would take a 5-week break and then switch to Mounjaro. You should start with a dose of 2.5mg, though sometimes you might be advised to start at a slightly higher dosage. It depends on how your body responds to the medicine.
Weight loss injections are additional tools for weight management and should not be considered lifelong solutions. If Mounjaro causes digestive issues such as stomach upset, diarrhoea, or constipation, try taking it with food or adjusting the timing of your doses. Eating a balanced diet with fibre-rich foods can also help regulate digestion.
During the transition period, regularly monitor your weight, blood sugar levels, and overall health. Keep notes to track any changes and share this information with your healthcare provider.
A balanced diet plays a significant role in Mounjaro’s effectiveness. Focus on nutrient-dense foods such as fruits, vegetables, lean proteins, and whole grains. Avoid high-fat and high-sugar foods, which can counteract the medication’s benefits.
Incorporating regular physical activity into your routine can enhance the weight loss effects of Mounjaro. Aim for at least 150 minutes of moderate-intensity exercise per week, such as brisk walking, cycling, or swimming.
If you want to switch from Ozempic to Mounjaro, book an online consultation with our healthcare professionals at The Care Pharmacy Weight Loss Clinic. After the consultation, your weight loss medication will be delivered to your doorstep for free, and you won’t have to travel to pick it up from the store.
Medically reviewed by
Superintendent Pharmacist
The most common question we hear from patients is: Wegovy vs Mounjaro — which one should I choose? This honest, pharmacist-written guide covers clinical trial data, the new Wegovy 7.2mg dose, real-world UK pricing, side effects, NHS access, and how to decide which weight loss injection suits your goals. Updated: March 2026 · 16 min […]
Wegovy and Mounjaro are two popular injectable weight loss treatments that work by regulating appetite and supporting reduced calorie intake. As their use has grown in the UK, many patients want to understand the differences between them and whether one may be better suited to fasting during Ramadan. Regulated access to both treatments is available […]
Mounjaro has quickly become one of the most widely discussed medical weight loss treatments in the UK. Many patients experience noticeable appetite reduction and steady progress during the early stages of treatment. However, it is also very common to reach a point where weight loss slows down or temporarily stops, leading to frustration and the […]
If you are exploring prescription weight management options and wondering whether Xenical or a weight loss injectable is right for you, our clinical team can help. At The Care Pharmacy, we offer a range of medically approved weight loss treatments, including Xenical and several injectable options. The right choice depends on your health profile, weight […]
If you are researching whether weight loss injections are safe, you are likely looking beyond headlines and marketing claims. You want clarity on real risks, long-term safety, side effects, monitoring, and whether these treatments are appropriate for you personally. Weight loss injections such as GLP-1 based medications are now widely prescribed in the UK, both through […]
If you are experiencing mounjaro constipation, you are not alone. Constipation is a well recognised side effect of Mounjaro and other GLP-1 based weight loss treatments. For many people, it is mild and temporary. For others, it can be uncomfortable enough to affect daily life and confidence in continuing treatment. From the perspective of The […]
