Mounjaro
If you’re exploring weight-loss injections in the UK, you’ve likely come across Mounjaro (tirzepatide) and Wegovy (semaglutide) — two of the most effective prescription treatments available today.
Both can help you lose significant weight, but they work in slightly different ways.
This pharmacist-reviewed comparison from PPRX Online Pharmacy explains how Mounjaro and Wegovy differ, their results, side effects, and which one might suit you best.
1. How They Work
Both Mounjaro and Wegovy belong to a class of medicines known as GLP-1 receptor agonists, which regulate appetite and blood sugar.
However, Mounjaro goes one step further: it also activates GIP receptors, offering dual hormone action for greater appetite control.
| Medicine | Active Ingredient | Mechanism | Effect |
|---|---|---|---|
| Mounjaro | Tirzepatide | GLP-1 + GIP dual receptor | Greater appetite suppression and improved insulin response |
| Wegovy | Semaglutide | GLP-1 single receptor | Strong appetite control and slower digestion |
2. Effectiveness for Weight Loss For Mounjaro Vs Wegovy
Clinical data shows both medicines are highly effective for obesity management, but Mounjaro leads slightly in total body-weight reduction.
| Duration | Wegovy Average Loss | Mounjaro Average Loss |
|---|---|---|
| 3 months | 5–7 % | 8–10 % |
| 6 months | 10–12 % | 15 % + |
| 12 months | 15 % | Up to 22 % |
Patients using Mounjaro often report faster and steadier progress once their body adapts to the treatment.
3. Dosing Schedule
Both are weekly injections supplied in pre-filled pens.
| Medicine | Starting Dose | Increases Every | Max Dose |
|---|---|---|---|
| Mounjaro | 2.5 mg | 4 weeks | 15 mg |
| Wegovy | 0.25 mg | 4 weeks | 2.4 mg |
Mounjaro offers a wider dosing range and slower titration, allowing better personalisation and tolerance.
4. Common Side Effects of Mounjaro and Wegovy
Both can cause temporary digestive symptoms, usually improving after a few weeks.
| Side Effect | Wegovy | Mounjaro |
|---|---|---|
| Nausea | ✓ | ✓ |
| Constipation | ✓ | ✓ |
| Diarrhoea | ✓ | ✓ |
| Heartburn | ✓ | ✓ |
| Fatigue | ✓ | Occasionally |
PPRX pharmacists advise taking injections after a light meal, eating slowly, and drinking plenty of water to reduce side effects.
5. Price Comparison (October 2025)
| Strength | Wegovy (4-Week Supply) | Mounjaro (4-Week Supply) |
|---|---|---|
| Starter dose | £189.99 | £199.99 |
| Medium dose | £219.99 | £299.99 |
| Higher dose | £289.99 | £349.99 |
Prices include consultation, private prescription, and next-day delivery.
➡️ Buy Mounjaro UK – PPRX Online Pharmacy
➡️ Buy Wegovy UK – PPRX Online Pharmacy
6. Which One Is Right for You?
Choose Mounjaro if:
- You want faster, greater weight-loss potential
- You have insulin resistance or PCOS
- You’ve used GLP-1 medicines before and want the next level of results
Choose Wegovy if:
- You prefer a single-action GLP-1 medication
- You’re starting weight-loss treatment for the first time
- You want a slightly gentler start for your digestive system
Both options are safe and effective when prescribed by a qualified clinician.
7. Why Order from PPRX
- GPhC-registered UK pharmacy (Reg. No. 9012740)
- Free online consultation with UK prescribers
- Private prescription included
- Next-day cold-chain delivery
- Pharmacist travel letters for tourists and travellers
Your order always comes from genuine UK stock with full prescription support.
FAQs
Is Mounjaro stronger than Wegovy?
Yes — Mounjaro works on two hormones (GLP-1 + GIP), which can enhance appetite suppression and weight-loss speed.
Can I switch from Wegovy to Mounjaro?
Yes, under clinical guidance. A prescriber will advise how to safely transition.
Which one causes fewer side effects?
Both are well tolerated; Mounjaro users may experience slightly more nausea at the start, but it usually settles within weeks.
Pharmacist Review
This article was reviewed by a GPhC-registered pharmacist following MHRA and NICE guidance on tirzepatide and semaglutide prescribing in the UK.
Start your order today at www.pprx.co.uk
At PPRX UK, we provide:
- Genuine Mounjaro pens, sourced directly from the manufacturer (Eli Lilly)
- Dispensing via a GPhC-registered UK pharmacy
- Professional consultations with UK pharmacists
- Ongoing support, dosage guidance, and repeat supply options
Whether you’re just starting or switching from Ozempic or Wegovy, we’re here to help.
📞 Get in Touch
Visit www.pprx.co.uk or contact us directly to begin your online consultation.
We offer fast, discreet UK-wide delivery and exceptional support throughout your journey.
Mounjaro is a prescription-only medicine. This article is for informational purposes only and does not replace medical advice. Always consult a qualified healthcare provider before starting treatment. nhs
