Wegovy (Semaglutide) and Mounjaro (Tirzepatide) are prescription weight‑loss medications available privately in the UK. As their popularity grows and clinical studies show strong results, many people are asking:
“Which one should I choose?”
This guide explains the key differences between Wegovy and Mounjaro, including how each treatment works, expected weight‑loss results, potential side effects, safety considerations, and which option may be best suited to your needs.
What Is Wegovy?
Wegovy contains Semaglutide, a GLP‑1 receptor agonist originally developed to treat type 2 diabetes. It is now approved for weight management in adults who are obese or overweight and have related health risks.
How Wegovy Works
- Reduces appetite
- Slows digestion
- Increases feelings of fullness
- Helps lower cravings
How Often Is Wegovy Taken?
Wegovy is taken once weekly using a pre‑filled injection pen.
What Is Mounjaro?
Mounjaro contains Tirzepatide, a dual GIP and GLP‑1 receptor agonist. By targeting two appetite‑regulating hormones, it is considered one of the most advanced weight‑loss medications currently available.
How Mounjaro Works
- Suppresses appetite more powerfully
- Improves insulin sensitivity
- Enhances feelings of fullness
- Supports greater overall weight reduction
How Often Is Mounjaro Taken?
Mounjaro is also taken once weekly using a pre‑filled injection pen.
Wegovy vs Mounjaro: Key Differences
| Feature | Wegovy | Mounjaro |
|---|---|---|
| Active ingredient | Semaglutide | Tirzepatide |
| Hormone targets | GLP‑1 | GLP‑1 + GIP |
| Strength options | 0.25–2.4mg | 2.5–15mg |
| Weekly injection | Yes | Yes |
| Average weight loss | ~15% | ~22%+ |
| Appetite control | Strong | Very strong |
Which Treatment Leads to More Weight Loss?
Clinical studies consistently show that Mounjaro leads to greater average weight loss, with many patients losing around 20–22% of their body weight.
Wegovy also delivers excellent results, with typical weight loss of around 15%.
Both medications are highly effective — the right choice depends on individual goals and clinical suitability.
Side Effects: Wegovy vs Mounjaro
Both treatments have similar side‑effect profiles, which usually improve as the body adjusts.
Common Side Effects
- Nausea
- Vomiting
- Diarrhoea
- Constipation
- Indigestion
- Abdominal discomfort
Are Side Effects Stronger With Mounjaro?
Some people experience slightly more nausea early on due to Mounjaro’s dual‑hormone action, though this varies between individuals.
Who Is Wegovy Best For?
- Those who prefer a treatment with a long clinical history
- People wanting a gentler introduction to GLP‑1 therapy
- Individuals who have previously used Semaglutide
Who Is Mounjaro Best For?
- Those seeking the strongest appetite‑suppressing effect
- People aiming for greater overall weight loss
- Individuals who have not responded well to GLP‑1‑only treatments
- Those who prefer a dual‑action medication
Safety Considerations
- Personal or family history of medullary thyroid cancer
- MEN2 syndrome
- Pregnancy or breastfeeding
- Severe gastrointestinal disease
All treatments are prescribed following an individual clinical assessment by a qualified pharmacist.
How to Choose Between Wegovy and Mounjaro
- Your weight‑loss goals
- Previous experience with GLP‑1 medications
- Tolerance of side effects
- Your medical history
- Budget and availability
At MyPharmacyClinics, a prescribing pharmacist reviews every online consultation and may follow up by phone or video to ensure treatment is safe and appropriate.
Final Verdict: Wegovy or Mounjaro?
Choose Wegovy if you want:
- A well‑established GLP‑1‑only treatment
- Strong appetite reduction
- Steady, consistent weight loss
Choose Mounjaro if you want:
- The most powerful weight‑loss results currently available
- Dual‑action appetite control
- A higher likelihood of losing more than 20% of body weight
