Top Seller

Mysimba Prolonged Release Tablets

Based on 32 reviews

Available in 112 and 224 tablets

  • Weight loss tablets
  • Helps reduce food cravings
  • For those with a BMI of 30 or over
  • Always read the patient information leaflet before use
Pack Size
Price

112 Tablets

£99.99

224 Tablets

£195.99
This treatment is inclusive of consultation & private prescription
Start consultation
How we are regulated
Let us explain how it works
select consultation
Step 1
Choose a condition
Select your condition.
complete detail
Step 2
Complete a consultation
Answer some health-related questions so our pharmacists can determine the right treatment for you.
suggested treatment
Step 3
Choose a treatment
We’ll provide you with treatment options to treat your condition.
fast delivery
Step 4
Fast and discreet delivery
We’ll issue your prescription and treatment in one cost and deliver it fast and discreetly to your door.
Alexandra Smith - Senior Medical Writer
Alexandra Smith
Senior Medical Writer
08/04/2025
07/04/2027
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist
2084549

Buy Mysimba Weight Loss Tablets

Mysimba tablets are an effective weight loss treatment that helps to reduce appetite and food cravings. If you're an adult with a BMI of 30 or above, Mysimba tablets could be the ideal solution to help kickstart your weight loss journey. It's also prescribed for those with a BMI between 27 and 30 who have weight-related health issues like diabetes or high cholesterol.

 

Start your Mysimba consultation

 

How to take Mysimba

Always take Mysimba tablets exactly as described in the patient information leaflet or as your doctor / Chemist4U pharmacist has told you. For detailed instructions on how to take your Mysimba tablets, please refer to the ‘How to take Mysimba’ section of our guide.

Mysimba side effects

Like all medicines, Mysimba tablets may cause side effects in some people, but these won’t affect everybody. Common side effects may include: 

For more information on potential side effects, refer to the patient information leaflet or read the ‘Mysimba side effects’ section of our guide. 

Warnings

  • Do not take Mysimba if you’re allergic to naltrexone, bupropion or any of the other listed ingredients. 
  • Mysimba is only suitable for adults aged 18 years and over.
  • Do not take Mysimba if you are pregnant or breastfeeding. 
  • Do not drink alcohol while taking Mysimba.
  • Do not drive if you feel dizzy or sleepy from Mysimba.
  • Inform your prescriber if you’re taking any other medication.

Storage information

Store below 30°C in a cool, dry place out of sight and reach of children. Do not use after the expiry date, referring to the last day of the month stated on the packaging.

 

Start your Mysimba consultation

Find similar products

Mysimba Prolonged Release Tablets Reviews

white-star white-star white-star white-star white-star
By Martin Mangik,
September 09, 2025
Great service professional and speedy delivery.
white-star white-star white-star white-star white-star
By Brian Haddow,
June 10, 2025
Helping maintain weight loss goal after Wegovy
white-star white-star white-star white-star white-star
By Karen.H,
April 03, 2025
Brill service and very competitive prices on their products. Will use again, thanks x
white-star white-star white-star white-star white-star
By Sarune Levickyte,
March 25, 2025
Good product
white-star
By Claire,
December 14, 2024
I experienced terrible side effects so had to stop within two days of starting.

Advice & Guides

BRI: Calculate Your Body Roundness Index

Use our BRI calculator to find out where you are on the Body Roundness Index and what it means for your weight loss journey. Body Roundness Index Calculator .bri-calc-wrapper * { margin: 0; padding: 0; box-sizing: border-box; } .bri-calc-wrapper { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: linear-gradient(135deg, #ecc9e1...
Read More

Can You Get Weight Loss Injections on the NHS?

Weight loss injections like Mounjaro and Wegovy are available through the NHS for people living with obesity and weight-related health conditions. However, this hasn’t been rolled out across the country yet, and access is limited to patients who meet strict eligibility criteria. In this guide, we’ll break down exactly who...
Read More

Weight Loss Injections vs Bariatric Surgery

Weight loss injections like Mounjaro and bariatric surgeries, such as a gastric sleeve or bypass, can help you lose a significant amount of weight, but they work in very different ways. If you’ve been thinking about taking the next step in your weight loss journey, it’s completely normal to feel...
Read More

Exercise and Activity in Maintenance

Exercise is an essential part of your maintenance phase. But at this stage, now that you’ve already achieved significant weight loss, it’s not about pushing yourself, it’s about keeping up progress.   You’re already well on your way to achieving your main goal, getting down to a healthy weight. Now...
Read More

Mental Health and Motivation in Maintenance

Reaching your goal weight is a big achievement, but maintaining this progress can bring new emotional challenges and requires a shift in your mindset. That’s why we’ve written this guide to support your mental and emotional wellbeing through the maintenance phase. Let's unpack how to manage the emotional ups and...
Read More

Travelling while on weight loss treatment

Whether you’re off for two weeks in the sun or a long weekend city break, when travelling with weight loss treatment, a bit of preparation goes a long way. It’ll help keep your medication safe, your routine steady, and your mind focused on relaxing, not worrying. In this guide, we’ll...
Read More

Nutrition and Diet for Maintenance: Staying on Track After Weight Loss  

Focusing on good diet that's not just nutritious but enjoyable enough to keep your tastebuds and your muscles satisfied is one of your most powerful long-term tools for maintenance. Maintenance is all about staying consistent for the long term and keeping the motivation you built during your weight loss journey...
Read More

Chemist4U Report: NHS Bariatric Ambulance Bill 

The UK is now one of the heaviest countries in Europe. Around 64% of adults are overweight, and 28% are obese, double the number from 1990, when only 14% of adults were classed as obese.  Hospital admissions linked to obesity have also shot up. In 2017–2018, there were 711,000 hospital...
Read More
Frequently Asked Questions

Are Mysimba and Wellbutrin the same thing?

Wellbutrin is an antidepressant medication used in the UK to treat nicotine addiction and help you quit smoking.

It’s also used to treat major depressive disorder (MDD) and seasonal affective disorder (SAD) in other countries, although it is not currently licensed to be used for this in the UK.

The active ingredient in Wellbutrin is Bupropion, which is also used as an active ingredient in Mysimba, making these medicines very similar.

However, as Mysimba also contains a second active ingredient (Naltrexone) which is not included in Wellbutrin, these medications are not the same thing.

With that in mind, Wellbutrin should not be used for weight loss and should only be used as prescribed by a doctor to help you quit smoking.

Are Mysimba weight loss tablets right for me?

Mysimba tablets should only be taken by adults over the age of 18 who have a body mass index (BMI) of 30 and above, which would place them into the obese category.

However, you may also be able to take this treatment if your BMI is between 27 and 30 and you also have weight-related conditions, such as high blood pressure, type 2 diabetes, or high levels of fat in your blood.

Your BMI is calculated using your weight and your height and is a good indicator of whether or not you are at a healthy weight.

If you’re unsure what your BMI is, we’d recommend using the NHS’s BMI Calculator which will work it out for you and give you an indication of whether you may be able to use Mysimba for weight loss.

Do I need a prescription for this medication?

You do need a prescription for this medication in the UK.

Our healthcare professionals can provide prescriptions if they think this treatment would be right for you and your condition.

When you click the button which reads “Start Consultation” at the top of this page, you’ll see a short questionnaire set up by our healthcare team which is designed to help them understand your medical needs.

Just like an in-person consultation with your GP, our doctors will assess your answers to their questions and write a prescription for the treatment they think will be best for you.

You’ll then be able to pay for your medication and we’ll send it out to you quickly and in discreet packaging.

© 2025 Chemist4U. Innox Trading Ltd, 1 Penketh Place, Skelmersdale, Lancashire, WN8 9QX, GB. All rights reserved. Registered and regulated UK pharmacy with the GPhC (registered premises 9012464). Registered in England No. 07262043 | VAT Registration No. GB140138454