The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
Free tracker included with every download this week
Mounjaro 5mg Discount Code — What You Need to Know
There are no legitimate discount codes for Mounjaro 5mg in the UK. As a prescription-only medication manufactured by Eli Lilly, Mounjaro (tirzepatide) is only available through NHS specialist services or licensed private prescribers following clinical assessment. This guide explains NHS eligibility, how to access Mounjaro 5mg, and what to expect from costs in both the NHS and private routes. If you're considering this GLP-1 medication, understanding the legitimate pathways to prescription is essential for safe and legal access.
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Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
NHS Access to Mounjaro 5mg in the UK
Mounjaro is available through the NHS for eligible adults who meet specific criteria. Access is primarily through tier 3 specialist weight management services — not from standard GP prescription. To qualify for NHS Mounjaro, you typically need a BMI of 30 or above, or 27–29.9 with weight-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnoea.
However, NHS access varies significantly by region. Many areas have limited or no Mounjaro availability due to funding constraints and waiting lists that can exceed 12–24 months. Your GP can refer you to your local tier 3 service to check eligibility and availability. If NHS access is delayed or unavailable, private prescription remains an alternative route.
- NICE guidance: Tirzepatide (Mounjaro) is approved by NICE for use within NHS weight management services
- Tier 3 referral: Most often accessed through specialist referral, not community GP
- Regional variation: Availability depends on your Integrated Care Board (ICB) area
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Private Access and Pricing for Mounjaro 5mg
Private prescriptions for Mounjaro 5mg are available through GPhC-registered online pharmacies without NHS referral. A licensed prescriber will assess your eligibility via an online consultation, and if approved, issue a prescription for dispensing. Private Mounjaro costs typically range from £130–£180 per dose (4-week supply) depending on the pharmacy and dose level.
Beware of "discount codes" or unregistered sellers: Any pharmacy claiming to offer discount codes or undercutting prices significantly may not be GPhC-registered. Always verify the pharmacy's registration on the GPhC register before purchasing. Use our free BMI calculator and GLP-1 weight loss calculator to assess your eligibility and projected outcomes before committing to private treatment.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
Can I get a Mounjaro 5mg discount code online?
No. Mounjaro is a prescription-only medicine; legitimate discount codes do not exist. Be cautious of any online seller offering "discounts" or codes — this may indicate an unregistered pharmacy or counterfeit product. Always use a GPhC-registered pharmacy and verified prescriber.
How much does Mounjaro 5mg cost on the NHS?
Mounjaro is free when prescribed through the NHS, but access is limited and regional. Most areas have waiting lists of 12+ months. Ask your GP about tier 3 weight management services in your area to check current availability and waiting times.
What is Mounjaro 5mg used for?
Mounjaro (tirzepatide) is a once-weekly injection for weight management in UK adults. It's a dual GIP and GLP-1 receptor agonist that may help reduce appetite and support feeling fuller after smaller meals. It's used alongside a reduced-calorie diet and increased physical activity.
Am I eligible for NHS Mounjaro 5mg?
You may be eligible if you have a BMI of 30 or above, or 27–29.9 with weight-related health conditions (diabetes, high blood pressure, sleep apnoea). Speak to your GP about referral to your local tier 3 specialist weight management service to confirm eligibility and availability.
How do I access private Mounjaro prescriptions in the UK?
Contact a GPhC-registered online pharmacy. You'll have an online consultation with a UK-licensed prescriber who will assess your suitability. If approved, a prescription is issued and the medication dispensed. Always verify the pharmacy's GPhC registration before proceeding.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.