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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Best Alcoholic Drinks for Weight Loss in the UK
If you're trying to lose weight, alcoholic drinks are often overlooked in weight management discussions — but they can significantly impact your calorie intake. This guide explores which alcoholic drinks have the lowest calories and how they fit into effective weight loss strategies. Understanding alcohol and weight loss is important whether you're managing your weight through lifestyle changes alone or considering prescription weight loss medication as part of your NHS weight loss journey.
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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.
Which Alcoholic Drinks Have the Fewest Calories?
When it comes to lower-calorie alcoholic options, some drinks are significantly better choices than others. Spirits like vodka, gin, and whisky contain around 65 calories per 25ml single measure with no added sugar, making them the lowest-calorie alcohol option. Light beers typically contain 80–100 calories per 330ml can, compared to standard lagers at 150–170 calories. Dry wines (red, white, or rosé) contain approximately 120 calories per 175ml glass. Sweet wines, cocktails, and mixers add substantial calories — a typical cocktail can contain 200–400 calories before accounting for sugary mixers.
- Spirits (vodka, gin, whisky): 65 calories per 25ml measure
- Light beer: 80–100 calories per 330ml
- Dry wine: 120 calories per 175ml glass
- Prosecco: 80 calories per 125ml flute
- Avoid: Cocktails, sweet wines, and sugary mixers (200–400+ calories)
The key principle is that alcohol contains 7 calories per gram — nearly as much as fat — so even modest drinking adds up quickly. If you're following a reduced-calorie diet for weight management, every calorie counts.
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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.
Alcohol and Weight Loss Strategy
Alcohol affects weight loss in multiple ways beyond just calories. It can reduce motivation for healthy eating, impair judgement around food choices, and slow metabolism temporarily. If you're using GLP-1 weight loss medication like Wegovy or Mounjaro, alcohol may interact with the medication's effects on appetite and digestion. You should always check with your GP or prescriber about alcohol use while on prescription weight loss medication.
For sustainable weight management in the UK, the NHS recommends balancing reduced-calorie food choices with increased physical activity. You can track your progress using our free progress tracker, and use our BMI calculator to monitor your health metrics alongside any dietary or medication changes you're making.
- 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 lowest-calorie alcoholic drink I can choose?
Spirits like vodka, gin, and whisky are the lowest-calorie options at around 65 calories per 25ml single measure, consumed neat or with sugar-free mixers. Dry white wine (120 calories per glass) and light beer (80–100 calories per can) are also reasonable lower-calorie choices if spirits aren't your preference.
Can I drink alcohol while taking weight loss medication?
You should discuss alcohol use with your prescriber or GP before drinking on prescription weight loss medication like Mounjaro or Wegovy. Alcohol may interact with how the medication works and can affect your weight loss results. Individual guidance depends on your specific medication and health circumstances.
How many calories are in a typical glass of wine?
A standard 175ml glass of dry wine contains approximately 120 calories. Sweet wines are higher — around 150–180 calories per glass. Red, white, and rosé dry wines are similar in calorie content if they're comparable in alcohol strength (around 12–13% ABV).
Does alcohol stop weight loss completely?
Alcohol doesn't stop weight loss entirely, but it does add calories that reduce your calorie deficit. If you're following a calorie-controlled diet for weight management in the UK, regular alcohol consumption can slow your progress. Occasional moderate drinking is generally compatible with weight loss, but frequency and quantity matter.
Why are cocktails so high in calories?
Cocktails combine spirits with sugary mixers, juices, syrups, and sometimes cream — each adds significant calories. A typical cocktail (spirits, sugary mixer, and garnish) contains 200–400+ calories. If you enjoy cocktails, opt for spirits with sugar-free mixers and avoid cream-based or syrup-heavy options.
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.