A MOUNJARO user has claimed that after 19 weeks of injecting, she is “too scared to move away from the toilet” as a result of her side effects.
Maddy, who has lost 40lbs [2 stone 8lbs] since using the weight loss jabs, is now unable to go to work as a result of suffering from diarrhoea.
Posting on social media, the content creator got candid on her Mounjaro side effects, leaving many open-mouthed.
As she stood in her bathroom, she confirmed that after injecting herself with Mounjaro, which is known as the King Kong of jabs, in her arm, she was very “poorly.”
Not only did she feel sick, but she also had diarrhoea and sulphur burps too.
Despite this, Maddy confirmed that last Tuesday, she decided to inject in her arm again.
But by Wednesday afternoon, she noticed the re-emergence of sulphur burps – which have been described by many as foul-tasting burps that taste like eggs.
And that wasn’t all, as Maddy continued: “And I know what comes hand-in-hand with sulphur burps – it’s the s***s.”
So it didn’t come as a surprise when Maddy woke up the following morning with an upset stomach, as she admitted: “I felt rough, but not too bad – I still went to work and then towards the end of the day at work, I felt like s**t, I literally went and slept in my car for half an hour because I just felt rough.”
Upon returning home from work, Maddy then slept from 5:30pm until 11pm.
After waking up, the brunette beauty had some dinner and went back to bed, but it wasn’t long before more side effects started, as she confessed: “My belly felt so bubbly and gassy…Woke up two or three times in the night with the s***s and I actually did s**t myself.
“If you’re on Mounjaro, then you know, if you’re not, you won’t understand, so after that I thought, I’m not going to work today, I’m not even going to risk it. It’s not worth it at work.”
Not only this, but she also revealed: “I’ve been too scared to move away from the toilet all morning because I still feel like s**t.”
The TikTok clip, which was posted under the username @mjwithmad, has clearly left many open-mouthed, as it has quickly racked up 56,100 views, 892 likes and 118 comments.
My belly felt so bubbly and gassy
Maddy
But Maddy isn’t the only Mounjaro user to be experiencing such horrendous side effects, as many others flocked to the comments to share their similar experiences.
One person said: “These sulphur burps are something else! I’m week three and I jabbed my arm yesterday. I feel dreadful!”
Another added: “Did my first injection in my belly last week was fine, did my arm yesterday and today I feel so tired and sluggish, lost half a stone in a week though!”
A third commented: “Not me seeing this video one day after I decided to jab in my arm for the first time. Now I’m scared.”
Your choice of injection site can affect the side effects that you can experience when taking Mounjaro
Jason Murphy
Whilst one woman claimed: “Girl, this is so so common on Mounjaro!! More common than I’d like to admit.”
Meanwhile, someone else wrote: “I was looking forward to trying my arm but now I’m not so sure.”
Everything you need to know about fat jabs
Weight loss jabs are all the rage as studies and patient stories reveal they help people shed flab at almost unbelievable rates, as well as appearing to reduce the risk of serious diseases.
Wegovy – a modified version of type 2 diabetes drug Ozempic – and Mounjaro are the leading weight loss injections used in the UK.
Wegovy, real name semaglutide, has been used on the NHS for years while Mounjaro (tirzepatide) is a newer and more powerful addition to the market.
Mounjaro accounts for most private prescriptions for weight loss and is set to join Wegovy as an NHS staple this year.
How do they work?
The jabs work by suppressing your appetite, making you eat less so your body burns fat for energy instead and you lose weight.
They do this my mimicking a hormone called GLP-1, which signals to the brain when the stomach is full, so the drugs are officially called GLP-1 receptor agonists.
They slow down digestion and increase insulin production, lowering blood sugar, which is why they were first developed to treat type 2 diabetes in which patients’ sugar levels are too high.
Can I get them?
NHS prescriptions of weight loss drugs, mainly Wegovy and an older version called Saxenda (chemical name liraglutide), are controlled through specialist weight loss clinics.
Typically a patient will have to have a body mass index (BMI) of 30 or higher, classifying them as medically obese, and also have a weight-related health condition such as high blood pressure.
GPs generally do not prescribe the drugs for weight loss.
Private prescribers offer the jabs, most commonly Mounjaro, to anyone who is obese (BMI of 30+) or overweight (BMI 25-30) with a weight-related health risk.
Private pharmacies have been rapped for handing them out too easily and video calls or face-to-face appointments are now mandatory to check a patient is being truthful about their size and health.
Are there any risks?
Yes – side effects are common but most are relatively mild.
Around half of people taking the drug experience gut issues, including sickness, bloating, acid reflux, constipation and diarrhoea.
Dr Sarah Jarvis, GP and clinical consultant at patient.info, said: “One of the more uncommon side effects is severe acute pancreatitis, which is extremely painful and happens to one in 500 people.”
Other uncommon side effects include altered taste, kidney problems, allergic reactions, gallbladder problems and hypoglycemia.
Evidence has so far been inconclusive about whether the injections are damaging to patients’ mental health.
Figures obtained by The Sun show that, up to January 2025, 85 patient deaths in the UK were suspected to be linked to the medicines.
What do the experts say?
After numerous fat jab users complaining of similar side effects following injecting Mounjaro, which is said to suppress the appetite, into their arms, we spoke to the experts to get their thoughts on why this might be happening.
Jason Murphy, Head of Pharmacy at Chemist4U told Fabulous: “Your choice of injection site can affect the side effects that you can experience when taking Mounjaro.
“In a clinical trial, it was revealed that the overall percentage of participants who experienced side effects varied considerably – abdomen: 68.52%, upper arm: 57.41% and thigh: 43.40%.”
There’s no universally ‘best’ site to inject – just the one that works best for you
Kiran Jones
Not only this, but Roj Helin Parlakyildiz, a Clinician and Clinical Content Lead at Voy, shared: “While the pharmacokinetics of subcutaneous injections like Mounjaro are generally consistent across approved sites (abdomen, thigh, upper arm), local absorption can still vary slightly based on factors like blood flow, fat distribution, and muscular activity in those areas. This may influence how quickly the medication is absorbed.
“For example, the upper arm may have less subcutaneous fat and more variable injection depth compared to the abdomen or thigh, especially if the injection technique is less controlled, as the upper arm can be an awkward site.
“This might lead to faster absorption, potentially triggering more acute gastrointestinal side effects like sulphur burps or diarrhoea in sensitive individuals.”
Meanwhile, Clinical pharmacist Kiran Jones of Oxford Online Pharmacy also said to us: “While the injection site doesn’t theoretically have much influence on side effects experienced, some users consistently report more nausea with stomach injections.
What are the other side effects of weight loss jabs?
Like any medication, weight loss jabs can have side effects.
Common side effects of injections such as Ozempic include:
Nausea: This is the most commonly reported side effect, especially when first starting the medication. It often decreases over time as your body adjusts.
Vomiting: Can occur, often in conjunction with nausea.
Diarrhea: Some people experience gastrointestinal upset.
Constipation: Some individuals may also experience constipation.
Stomach pain or discomfort: Some people may experience abdominal pain or discomfort.
Reduced appetite: This is often a desired effect for people using Ozempic for weight loss.
Indigestion: Can cause a feeling of bloating or discomfort after eating.
Serious side effects can also include:
Pancreatitis: In rare cases, Ozempic may increase the risk of inflammation of the pancreas, known as pancreatitis, which can cause severe stomach pain, nausea, and vomiting.
Kidney problems: There have been reports of kidney issues, including kidney failure, though this is uncommon.
Thyroid tumors: There’s a potential increased risk of thyroid cancer, although this risk is based on animal studies. It is not confirmed in humans, but people with a history of thyroid cancer should avoid Ozempic.
Vision problems: Rapid changes in blood sugar levels may affect vision, and some people have reported blurry vision when taking Ozempic.
Hypoglycemia (low blood sugar): Especially if used with other medications like sulfonylureas or insulin.
“We’ve heard similar things from our patients, though we think this feedback is due to small individual differences like body fat distribution, blood flow, skin thickness and personal sensitivity. These can all subtly affect how your body responds, even if the absorption is technically the same.
“At the moment, science hasn’t quite caught up with this phenomenon. But just because it isn’t fully explained doesn’t mean it isn’t happening.”
As a result, this pharmacist stressed the importance of rotating injection sites, as he added: “If you notice more side effects in one area, try a different site next time. Keep a log of your symptoms and discuss any patterns with your pharmacist or healthcare provider.
“There’s no universally ‘best’ site to inject – just the one that works best for you.”
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