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
Male Weight Loss Workout Plan — UK Medication Options
A structured male weight loss workout plan works best when combined with sustainable lifestyle changes—and for eligible UK adults, prescription weight management medication can provide additional support. Whether you're managing weight for health reasons or targeting a specific BMI goal, understanding your options is essential. This guide covers UK-licensed prescription options, eligibility criteria, and how to access weight loss medication through the NHS or private routes.
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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.
UK-Licensed Weight Loss Medications for Men
Three prescription-only medications are currently licensed in the UK specifically for weight management in men who meet eligibility criteria:
- Mounjaro (tirzepatide): A once-weekly injection using dual GIP and GLP-1 technology. Clinical trials showed men lost an average of 15–21% of body weight alongside reduced-calorie diet and increased physical activity.
- Wegovy (semaglutide): A once-weekly GLP-1 injection. STEP trial data indicated average weight loss of approximately 15% over 68 weeks for eligible adults.
- Saxenda (liraglutide): A once-daily GLP-1 injection, less commonly prescribed but available on prescription.
Eligibility typically requires a BMI of 30 kg/m² or above, or 27–29.9 kg/m² with weight-related health conditions such as type 2 diabetes, high blood pressure, or cardiovascular disease. All medications work best alongside workout plans and dietary changes, not instead of them. Individual results vary significantly.
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.
Accessing Weight Loss Medication: NHS vs Private Routes
NHS access: Referral to a tier 3 specialist weight management service through your GP. NICE has approved tirzepatide for use within NHS services, though regional availability varies and waiting lists can be substantial. Not all areas offer equal access.
Private access: GPhC-registered online prescribers assess eligibility and issue prescriptions if suitable. Faster access than NHS but involves private costs. A prescriber will review your health status, BMI, and medical history before issuing any prescription.
Whichever route you choose, speak with your GP first—they can assess your personal eligibility, discuss your workout and diet plan, and either refer you to NHS services or advise on private options. Use our free BMI calculator above to check your current BMI status, and our GLP-1 weight loss calculator to explore potential weight loss projections if you qualify for medication.
- 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.
What's the difference between Mounjaro and Wegovy?
Mounjaro is a dual GIP and GLP-1 agonist with maximum dose of 15 mg weekly; Wegovy is a GLP-1 agonist only with maximum dose of 2.4 mg weekly. Clinical trials suggest Mounjaro may achieve slightly higher average weight loss (15–21% vs ~15%), but individual responses vary. Both require prescription and clinical assessment.
Do I need to give up my workout routine to use weight loss medication?
No. Prescription weight loss medications work best combined with regular physical activity and a reduced-calorie diet. Your workout plan remains important for fitness, muscle maintenance, and long-term health. Medication supports—not replaces—lifestyle changes.
How quickly will I lose weight on prescription medication?
Average weight loss takes time. Clinical trials showed results over 12–18 weeks of consistent use. The NHS recommends aiming for 0.5–1 kg per week as a sustainable rate. Initial doses are lower and increased gradually, which affects timeline. Results vary between individuals.
Can I access weight loss injections on the NHS as a man?
Yes, if you meet eligibility criteria: BMI ≥30, or BMI 27–29.9 with weight-related health conditions. Availability varies by region—some NHS areas have long waiting lists or limited capacity. Your GP can check what's available in your area and refer you to specialist services.
What happens if I stop taking weight loss medication?
Weight loss effects typically reverse over time if medication is stopped and lifestyle changes aren't maintained. Weight loss medication is intended as a long-term tool alongside sustained dietary and exercise habits. Your prescriber will discuss expected timelines and plans for ongoing management.
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.