Used Wegovy, Ozempic or Mounjaro in the UK?
Weight loss injections like Wegovy, Ozempic and Mounjaro have taken the UK by storm – fuelled by celebrity buzz and promises of quick results. But behind the hype, more and more users are reporting unexpected side effects, some of them serious.
Could this be the next big health scandal? We take a look at what we know so far, and why it matters.
Join the Claim is not a law firm. This information is for general guidance only and does not constitute legal advice.
The risks of weight loss injections
Weight loss injections have become hugely popular. But not everyone has had a positive experience. While some achieve their desired results, others have encountered serious health complications, including:
- Gastroparesis – leading to nausea and vomiting
- Inflammation of the pancreas
- Gallbladder disease and complications
- Severe dehydration from prolonged vomiting
- Organ failure, as linked to a 2025 UK case
Have you used one of these treatments and had a bad reaction? Tell us about it.
Have you experienced any of these side effects after using weight loss injections?
Have you ever lost money or personal data because of a scam or fraud?
Those who said yes:
Weight loss jabs: The side effects nobody’s talking about
Ozempic, Mounjaro, Wegovy — they’ve been called miracle fixes, but for some, the side effects are anything but minor. If you’ve experienced complications after using a weight loss injection, you’re not alone. From ongoing nausea to serious health issues, this guide breaks down what’s being reported — and what you can do next to protect your health and your rights.
Read moreCould you have a weight loss injection claim?
Despite the risks, some patients have accessed weight loss injections through online pharmacies and unregulated medi-spas, often without proper medical assessment. And, in the United States, lawsuits are already underway against drug manufacturers for failing to provide adequate safety warnings. Join the Claim is closely following legal developments here in the UK. Sign up for updates, and we’ll notify you if a group action lawsuit is launched with one of our trusted partner law firms.
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Weight loss injection claim FAQs
We do not charge you anything to check your eligibility or sign up to a claim. The law firms we partner with usually operate on a no-win, no-fee basis, meaning you only pay if the claim is successful. However, fees may apply if you cancel after the cooling-off period or breach your agreement.
If you win, the firm will either take its fees from your compensation payment or recover them from the defendants.
All terms are clearly explained before joining.
Want the full picture, including what to check before signing? Read our complete guide to no win, no fee agreements here.
No-win, no-fee means you only pay if the claim is successful. However, T&C’s apply. For example, fees may apply if you cancel after the cooling-off period or breach your agreement. All terms are clearly explained before joining. You can find out more about no-win, no-fee in our handy guide.
Eligibility varies by claim. Where we have a partner firm in place, you can use our quick online checker to determine if you meet the criteria for the specific group action.
Yes, both individuals and businesses may be eligible to join group claims, depending on the specific case.
JoinTheClaim.com is a platform that helps individuals and businesses find and join group legal actions. We do not run the group actions ourselves. Instead, we help connect eligible claimants with regulated UK law firms.
The duration of a claim depends on its complexity and the legal process involved. Your solicitor will keep you updated every step of the way.
Compensation can come in two ways: through a settlement, where the defendant agrees to pay without going to trial, or through damages, which are awarded by the court if the case is won. Compensation is designed to reimburse you for the harm or loss you’ve experienced – whether that’s financial, emotional, or related to your rights as a consumer or employee. Compensation amounts vary depending on the nature of the claim, how many people are involved, and how badly individuals were affected.
If you win your claim, a percentage of your compensation (agreed in advance) will be deducted as a success fee to cover legal costs. All terms are clearly explained before joining. You can find out more in our handy guide.
Disclaimer
This information is for general information purposes only and does not provide medical or legal advice. While we aim to keep the content accurate and up to date, information about medicines, side effects, and legal developments may change over time.
Always speak to a qualified healthcare professional before starting or stopping any medication, including weight loss injections such as Ozempic, Wegovy or Mounjaro. If you are experiencing side effects, contact your GP, pharmacist or NHS 111.
If you are concerned about how you were prescribed a weight loss drug, or believe you have suffered harm, you may wish to seek independent legal advice. We do not accept any responsibility or liability for any loss, damage, or consequences resulting from actions taken based on the information provided.
Join the Claim is not a law firm and does not provide legal representation. We work with regulated UK law firms and help connect eligible individuals to group actions managed by authorised legal professionals. Our partner law firms work on a no-win, no-fee basis. You’ll only pay if your claim succeeds. Fees may apply if you cancel after the cooling-off period or breach your agreement. All terms are clearly explained before joining.
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