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
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How to Access the Cheapest 7.5 Mg Mounjaro in the UK
Finding affordable Mounjaro (tirzepatide) at the 7.5 mg dose in the UK depends on whether you access it through the NHS or privately. The 7.5 mg dose is a mid-range escalation point in tirzepatide treatment — typically reached 8–12 weeks into therapy after starting at 2.5 mg and titrating upward. Cost and availability vary significantly between NHS specialist services and private online prescribing. Understanding your eligibility and the different routes to access can help you find the most cost-effective option for your situation.
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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 vs Private Routes for Mounjaro in the UK
NHS Access: Mounjaro is available through NHS tier 3 specialist weight management services, but availability is patchy across regions. Waiting lists can be 6–18 months or longer in many areas. If approved through NHS specialist services, there is no direct cost to you, making it technically the cheapest option — but access itself is limited and unpredictable.
Private Access: GPhC-registered online pharmacies offer Mounjaro following a clinical assessment by a UK-licensed prescriber. The 7.5 mg dose typically costs between £180–£280 per month depending on the provider. Private access is faster (often within days) but requires payment upfront. The cost per dose decreases slightly at higher doses due to volume pricing in some clinics.
- NHS route: Free if you get access, but long waiting lists and regional variation
- Private route: Faster access, wider availability, but 4-week supply costs £150–£320
- Your GP can refer you to tier 3 NHS services, or you can pursue private prescribing independently
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.
What to Expect at the 7.5 Mg Dose
The 7.5 mg dose sits in the middle of the mounjaro kwikpen dose range (2.5–15 mg). Most people reach this dose 8–12 weeks into treatment as part of the standard dose titration schedule. At this level, you may notice more noticeable appetite suppression and weight loss compared to lower doses, though results vary. Side effects — particularly nausea and gastrointestinal changes — may also be more pronounced. You can use our GLP-1 weight loss calculator to estimate potential outcomes at this dose based on your starting weight and health profile.
Whether you're accessing 7.5 mg through NHS specialist services or private prescribing, the medication itself is identical. The key difference is access speed, cost, and whether you've had to navigate waiting lists. Your prescriber will monitor your progress and may adjust your dose further based on your weight loss and tolerance.
- 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.
Is Mounjaro cheaper on the NHS or privately in the UK?
If you access Mounjaro through NHS tier 3 specialist services and are approved, there is no direct cost to you — making it technically cheapest. However, NHS waiting lists are 6–18 months in many areas. Private prescribing costs £150–£320 per month but offers faster access. Cost-benefit depends on how urgently you need treatment.
Why does the 7.5 mg dose cost more or less than other doses?
The 7.5 mg dose is a mid-range titration point on the mounjaro dose titration schedule. Monthly costs don't vary dramatically by dose, but some private providers offer slight discounts at higher doses due to volume pricing. The actual medication cost is secondary to the consultation and dispensing fees.
Can I switch between NHS and private Mounjaro prescriptions?
Switching between NHS and private prescriptions requires coordination with your healthcare provider. If you're on NHS and want to switch to private, you'll need to start fresh with a new private clinical assessment. Going from private to NHS requires GP involvement and referral to specialist services.
What's the difference between Mounjaro and Wegovy at 7.5 mg?
This comparison isn't direct — Mounjaro's maximum dose is 15 mg (weekly), while Wegovy's maximum is 2.4 mg (weekly). Mounjaro is a dual GIP/GLP-1 agonist; Wegovy is GLP-1 only. At comparable weight loss effect, Mounjaro typically requires lower absolute doses due to its dual mechanism.
How long does it take to reach the 7.5 mg dose on Mounjaro?
Following the standard mounjaro uk prescription protocol, you start at 2.5 mg (weeks 1–4), escalate to 5 mg (weeks 5–8), then to 7.5 mg (weeks 9–12). Each dose increment requires a minimum 4-week interval. Total time to reach 7.5 mg is typically 8–12 weeks, assuming no delays or dose adjustments due to side effects.
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.