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
Can You Take Mounjaro if You Have High Cholesterol?
Yes, you can take Mounjaro (tirzepatide) if you have high cholesterol. In fact, high cholesterol is one of the weight-related health conditions that may make you eligible for Mounjaro on the NHS. Because excess weight often contributes to high cholesterol, losing weight with Mounjaro may help improve your cholesterol levels over time. However, you'll need a clinical assessment to confirm it's safe for you, and your GP or prescriber will review all your current medications and health conditions before prescribing.
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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.
How Mounjaro May Help With Cholesterol
Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist — a prescription-only weight management injection licensed in the UK. Clinical trials show it helps people lose an average of 15–21% of their body weight alongside a reduced-calorie diet and physical activity.
High cholesterol often improves when you lose weight, because excess body fat is linked to higher LDL cholesterol and lower HDL cholesterol. By supporting weight loss, Mounjaro may indirectly help improve your cholesterol profile. However, Mounjaro is not a cholesterol medication — it doesn't directly lower cholesterol the way statins do. Your GP may still prescribe statins or other cholesterol medications alongside Mounjaro if needed.
- Average weight loss in clinical trials: 15–21% body weight
- Results achieved with diet changes and increased physical activity
- Individual results vary significantly
- Requires prescription and clinical assessment
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.
Important Medication Interactions and Considerations
Before starting Mounjaro, you must tell your prescriber about all medications you take, including cholesterol medications like statins (atorvastatin, simvastatin, rosuvastatin), ezetimibe, or PCSK9 inhibitors. Mounjaro itself doesn't directly interact with most cholesterol drugs, but it slows how quickly food leaves your stomach, which may affect how quickly other oral medications are absorbed.
If you're taking oral cholesterol medications, your prescriber may recommend taking them at a different time of day from your Mounjaro injection, or monitoring your cholesterol levels more frequently as you lose weight. Always inform your prescriber of high cholesterol diagnosis — it makes you eligible for weight management treatment and shows you have a weight-related health condition that justifies Mounjaro eligibility in the UK.
- 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.
Will Mounjaro directly lower my cholesterol?
No. Mounjaro is not a cholesterol medication. However, clinical evidence shows that losing weight improves cholesterol levels naturally. By supporting weight loss, Mounjaro may indirectly help improve your cholesterol profile. Your GP may continue or adjust your statin or other cholesterol medications alongside Mounjaro.
Does high cholesterol make me eligible for Mounjaro on the NHS?
Yes. High cholesterol is one of the weight-related health conditions that may qualify you for Mounjaro prescription in the UK. Combined with a BMI of 27 or above, you may be eligible through NHS specialist weight management services, though regional availability varies significantly.
Can I take Mounjaro with statins or other cholesterol drugs?
Yes, generally. Mounjaro doesn't directly interact with most cholesterol medications. However, inform your prescriber of all medications you take. Mounjaro may affect absorption of oral medications, so your prescriber might recommend timing doses differently. Cholesterol levels should be monitored as you lose weight.
How long does it take to see cholesterol improvements with Mounjaro?
Cholesterol improvements typically follow weight loss — usually visible within 8–12 weeks as you lose weight consistently. Individual timelines vary. Your GP can monitor your cholesterol with blood tests during Mounjaro treatment to track improvements and adjust other medications if needed.
What's the difference between Mounjaro and Wegovy for cholesterol?
Both are GLP-1-based injections (Mounjaro is dual GIP + GLP-1, Wegovy is GLP-1 only). Both support weight loss which may improve cholesterol. Mounjaro has shown slightly higher average weight loss in clinical trials. Both require prescription and clinical assessment. Your prescriber will recommend which suits you best based on your individual health profile.
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.