Mounjaro 5mg Price UK: Cheapest Pharmacies Compared (2026)
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Mounjaro 5mg is the first therapeutic weight loss dose in the titration schedule — the point where most patients start experiencing meaningful appetite suppression and measurable weight loss.
Cost calculator
Estimate based on today's cheapest advertised price (£154/month). Not a quote.
Mounjaro 5mg Price UK: At a Glance
| Metric | Detail |
|---|---|
| Cheapest price (UK) | From £154 per pen |
| Duration at this dose | 4 weeks minimum (weeks 5–8) |
| Previous dose | 2.5mg (weeks 1–4) |
| Next dose | 7.5mg (week 9) |
Compare live prices across all doses: MedEazy Mounjaro price comparison.
Why 5mg Matters
After four weeks on 2.5mg (tolerability only), your prescriber increases you to 5mg. This is when most patients first notice significantly reduced appetite, reduced 'food noise', and measurable weight loss — typically 1–2kg per month. SURMOUNT-1 data shows patients who stayed at 5mg long-term lost approximately 15% of body weight over 72 weeks.
Can You Stay on 5mg Long-Term?
Yes. If 5mg is working well and you're tolerating it, there's no requirement to increase. Many patients maintain 5mg for cost or tolerability reasons — at £154+/pen it's significantly cheaper than 10–15mg doses.
Full Titration Schedule
- Weeks 1–4: 2.5mg
- Weeks 5–8: 5mg — you are here
- Weeks 9–12: 7.5mg
- Weeks 13–16: 10mg
- Weeks 17–20: 12.5mg
- Week 21+: 15mg
See the full dose schedule guide.
Frequently Asked Questions
How much does Mounjaro 5mg cost in the UK?
Private prices start from £154 per pen. Use the MedEazy comparison tool for current prices.
Is 5mg effective for weight loss?
Yes — clinical trials show approximately 15% average body weight reduction over 72 weeks at 5mg.