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
Do ACV Pills Work for Weight Loss?
Apple cider vinegar (ACV) pills are marketed as a weight loss aid, but the scientific evidence supporting them is limited. While some small studies suggest ACV may have modest effects on appetite and blood sugar control, there is no strong clinical evidence that ACV pills alone lead to meaningful weight loss in UK adults. Most successful weight management approaches combine dietary changes, increased physical activity, and sometimes prescription weight loss medication. If you're looking for evidence-based weight loss support, your GP can discuss options tailored to your health needs.
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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.
What Does the Research Say About ACV Pills?
Scientific studies on apple cider vinegar for weight loss are limited and show mixed results. A small number of studies suggest ACV may have modest effects on appetite suppression and blood sugar regulation, but the evidence is not robust enough to recommend ACV pills as a standalone weight loss treatment. Most studies used liquid ACV rather than pills, and the weight losses observed were typically small — often less than 1–2 kg over several weeks.
The UK's NHS does not recommend ACV pills specifically for weight loss. Instead, the NHS emphasises sustainable weight management through a calorie-controlled diet and regular physical activity. For adults with a BMI of 30 or above, or 27 or above with weight-related health conditions, prescription weight loss medication may be appropriate — these have much stronger clinical evidence. You can check your personal BMI using our free BMI calculator on this page to understand your starting point.
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.
Better-Proven Weight Loss Options Available in the UK
If you're looking for evidence-based weight management support in the UK, several proven approaches are more effective than ACV pills:
- Calorie deficit: Losing approximately 500 kcal per day typically results in 0.5 kg weight loss per week — sustainable and evidence-based
- Prescription weight loss medication: GLP-1 injections like Wegovy and dual GIP/GLP-1 medications like Mounjaro have strong clinical evidence and may help eligible adults lose 15–21% of body weight when combined with lifestyle changes
- NHS weight management services: Free support through your GP, including behaviour change programmes and access to specialist services
- Dietary approaches: Mediterranean diet and low-carbohydrate approaches have strong evidence for sustainable weight loss
Talk to your GP about which weight loss approach is right for your individual health needs and circumstances.
- 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.
Are ACV pills safe to take for weight loss?
ACV pills are generally safe for most people in normal doses, but they're not regulated like medicines and quality varies between brands. They can interact with certain medications, particularly diabetes and heart medications. Always check with your GP before taking any supplement, especially if you're on prescription medication.
How much weight can you lose with ACV pills?
Most research shows very modest results — typically less than 1–2 kg over several weeks, often comparable to diet and exercise alone. There's no assures of weight loss with ACV pills. For more significant and reliable weight loss, prescription medications with clinical trial evidence are more effective.
Is ACV better than prescription weight loss injections like Wegovy?
No. Prescription weight loss medications like Wegovy (semaglutide) have strong clinical evidence showing average weight loss of 15% of body weight, compared to minimal evidence for ACV pills. However, these are prescription-only and require clinical assessment from a healthcare professional.
Can I use ACV pills instead of going to my GP about weight loss?
ACV pills should not replace professional weight management support. Your GP can assess your individual health, BMI, and any weight-related conditions, and recommend evidence-based treatments — including prescription medication if appropriate. Use our free BMI calculator to understand your starting point, then discuss options with your GP.
Does the NHS recommend ACV pills for weight loss?
The NHS does not recommend ACV pills specifically for weight loss. Instead, the NHS focuses on sustainable calorie deficit, increased physical activity, and — for eligible adults — prescription weight loss medication through specialist services. Ask your GP about NHS weight management support available in your area.
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.