News & Updates

Mounjaro vs Wegovy: Key Differences and Similarities Explained

Published On
10th February, 2025

At Pharmaesthetics Central, we specialise in medical weight loss treatments, helping patients achieve their goals safely and effectively. If you’ve been researching Mounjaro vs Wegovy, you may be wondering which medication is best suited for your weight loss journey.

Both Mounjaro (tirzepatide) and Wegovy (semaglutide) are injectable weight loss treatments that work by reducing appetite, controlling cravings, and improving blood sugar levels. However, they work differently, have distinct dosing schedules, and may produce different weight loss results.

In this guide, we’ll break down the key differences and similarities between Mounjaro and Wegovy, helping you make an informed decision about which weight loss treatment might be right for you.

How Do Mounjaro and Wegovy Work?

Mounjaro is a dual-acting medication that mimics two key hormones: GLP-1 (Glucagon-Like Peptide-1) helps control appetite, slows digestion, and regulates blood sugar.

GIP (Glucose-Dependent Insulinotropic Polypeptide) enhances insulin release, reduces food intake, and improves fat metabolism.

By targeting both GLP-1 and GIP receptors, Mounjaro offers a more comprehensive approach to weight loss compared to other GLP-1 medications like Wegovy.

Wegovy is a GLP-1 receptor agonist, meaning it only works on the GLP-1 hormone. It slows digestion, reduces hunger signals, and increases feelings of fullness, helping patients consume fewer calories and lose weight over time.

Both treatments help regulate appetite, but Mounjaro’s additional GIP action may contribute to greater weight loss and better metabolic effects for some patients.

Key Differences Between Mounjaro and Wegovy

View our easy to understand chart comparing Mounjaro vs Wegovy.

Which Medication Is More Effective for Weight Loss?

Clinical trials suggest that Mounjaro leads to greater weight loss than Wegovy.

A 2022 study found that patients on Mounjaro lost up to 22.5% of their body weight, while those on Wegovy lost around 15%. Mounjaro’s ability to target two hunger-regulating hormones (GLP-1 & GIP) is believed to contribute to its superior weight loss effects.

However, individual results vary, and some people may respond better to Wegovy based on their metabolism, health conditions, and tolerance for side effects.

Dosage and Titration Schedules

Both Mounjaro and Wegovy are once-weekly injections that require a gradual increase in dosage to help the body adjust and minimise side effects. Treatment starts at a lower dose – commonly 2.5mg for Mounjaro and 0.25mg for Wegovy per week – before progressively increasing over several weeks for optimal effectiveness.

While both follow a structured titration schedule, Mounjaro allows for a higher maximum dose, which may lead to greater weight loss for some patients. Wegovy, however, reaches its full dosage more quickly, offering a faster transition to a stable treatment level.

Mounjaro vs Wegovy - which is best for me?

Side Effects: What to Expect

Both medications share similar gastrointestinal side effects, but Mounjaro’s dual-action mechanism may make it easier to tolerate for some users. Common side effects for both medications include:

  • Nausea (most common)
  • Diarrhoea or constipation
  • Bloating and indigestion
  • Loss of appetite
  • Fatigue

Some patients report that Mounjaro causes less nausea than Wegovy, but this varies from person to person.

If side effects become severe, our Pharmaesthetics Central team can provide guidance on managing them or adjusting your dosage.

Who Should Take Mounjaro vs Wegovy?

Choosing between Mounjaro and Wegovy depends on several factors, including:

Weight loss goals – Mounjaro may be more effective for patients aiming for greater weight loss.

Tolerance for side effects – Some people tolerate one medication better than the other.

Underlying health conditions – Patients with type 2 diabetes may benefit more from Mounjaro, as it offers better blood sugar control.

Medication availability – Wegovy is more widely available in the UK, whereas Mounjaro is currently only available privately for weight loss.

At Pharmaesthetics Central, our specialists provide personalised consultations to determine which medication is right for you.

Mounjaro vs Wegovy for weight loss.

Mounjaro vs Wegovy: Which One Should You Choose?

If you are looking for the most effective weight loss injection, Mounjaro may offer superior results due to its dual-action hormone regulation. However, Wegovy remains a highly effective option, particularly for those who respond well to GLP-1-based treatments.

Ultimately, the best choice depends on your weight loss goals, medical history, and tolerance for side effects.

At Pharmaesthetics Central, we offer expert consultations, private prescriptions, and ongoing support for both Mounjaro and Wegovy. If you’re considering a medical weight loss solution, we can help you make the right choice for your individual needs.

Get Expert Advice from Pharmaesthetics Central

If you’re still unsure about Mounjaro vs Wegovy, book a consultation with our weight loss specialists at Pharmaesthetics Central. We’ll help you understand your options and create a personalised treatment plan to support your weight loss journey safely and effectively.

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This blog was written on behalf of Pharmaesthetics Central by Pharmacy Mentor.

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