Mounjaro
If you’ve been using Mounjaro (tirzepatide) for several months and your weight loss has slowed or stopped, you’re not alone.
Many people experience a plateau after the first few months of strong results — but that doesn’t mean the treatment has failed.
At PPRX Online Pharmacy, our pharmacists support thousands of Mounjaro users each month, and we know exactly how to get progress back on track safely.
Here are seven expert-approved reasons Mounjaro may seem to stop working — and what you can do about it.
1. You’ve Reached an Adjustment Phase
During the first 8–12 weeks, weight drops rapidly due to appetite changes and improved insulin control.
After that, your body adapts to its new metabolic rhythm, and weight loss slows.
This is completely normal — and temporary.
Don’t stop treatment unless advised; steady, slow loss is what keeps the weight off long-term.
2. Your Mounjaro Dose May Need to Increase
Mounjaro works best when the dose is gradually increased every four weeks, up to a maximum of 15 mg.
If you’ve been on the same dose for more than eight weeks and results have slowed, it might be time to step up.
Always consult your prescriber before increasing.
Typical titration plan:
| Stage | Dose | Duration |
|---|---|---|
| Starter | 2.5 mg | Weeks 1–4 |
| Step 1 | 5 mg | Weeks 5–8 |
| Step 2 | 7.5 mg | Weeks 9–12 |
| Step 3 | 10 mg | Weeks 13–16 |
| Step 4 | 12.5 mg | Weeks 17–20 |
| Step 5 | 15 mg | Week 21 + |
If you’ve stayed on a lower dose for too long, discuss an increase through your PPRX consultation.
3. Hidden Calories Have Crept Back In
Even with reduced appetite, small extra calories can stall results.
Common culprits include:
- Coffee syrups and milky drinks
- Sugary sauces and condiments
- Grazing and snacking out of habit
Keeping a food log for a week can reveal surprising patterns — your pharmacist can help you identify areas to adjust.
4. You’re Not Eating Enough Protein
Protein preserves lean muscle mass, which keeps your metabolism active during weight loss.
Aim for 20–30 g of protein per meal from chicken, fish, eggs, tofu, or beans.
If your meals are mainly carbs, progress can slow even on Mounjaro.
5. You’re Not Drinking Enough Water whilst on Mounjaro
Hydration directly affects digestion, metabolism, and appetite signals.
Drink 1.5–2 L of water daily and avoid excessive caffeine or alcohol, which can dehydrate you.
6. You’re Getting Less Active
As weight decreases, your body burns fewer calories.
Adding 30 minutes of brisk walking or resistance training daily can restart momentum without overexertion.
7. You Need a Routine Reset
Inject Mounjaro on the same day and time each week to keep hormone levels stable.
Inconsistent injection timing can slightly affect appetite control and digestion.
Pharmacist-Approved Quick Fix Checklist
✅ Confirm you’re following the correct dose plan.
✅ Review your food portions and hidden calories.
✅ Prioritise sleep and hydration.
✅ Add light physical activity 4–5 days per week.
✅ Stay consistent — avoid skipping doses.
If you’ve followed these tips and still see no change after 4–6 weeks, contact your prescriber for a dose review.
Mounjaro Prices at PPRX (October 2025)
Each Mounjaro KwikPen provides four once-weekly injections — a full 4-week supply.
| Strength | Price |
|---|---|
| 2.5 mg | £199.99 |
| 5 mg | £219.99 |
| 7.5 mg | £299.99 |
| 10 mg | £319.99 |
| 12.5 mg | £334.99 |
| 15 mg | £349.99 |
All prices include your private prescription, consultation, and next-day cold-chain delivery.
➡️ Buy Mounjaro UK – PPRX Online Pharmacy
➡️ Complete Your Free Consultation
Mounjaro FAQs
Why has my weight loss stopped?
It’s usually a dose-adjustment phase or a natural plateau. Review your habits and consult your prescriber before making changes.
Should I increase my dose myself?
Never adjust without medical approval — your prescriber will guide you based on your progress and side effects.
Can I switch to another GLP-1 like Wegovy?
Yes, under clinical supervision. Some patients alternate depending on tolerance or response.
Can I use Mounjaro long-term?
Yes, it’s suitable for ongoing management when monitored by a qualified prescriber.
Pharmacist Review
Written and reviewed by a GPhC-registered pharmacist following MHRA and NICE guidance for safe tirzepatide 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
