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Influencer who lost 6lbs in two days on Mounjaro warns people to ‘never ever go on it’

Home> News> Health

Updated 16:26 4 Aug 2025 GMT+1Published 15:25 4 Aug 2025 GMT+1

Influencer who lost 6lbs in two days on Mounjaro warns people to ‘never ever go on it’

She called her experience the 'biggest public service announcement' not to use the medication

Brenna Cooper

Brenna Cooper

Influencer Tana Mongeau has warned people against taking Mounjaro for weight-loss reasons after experiencing crippling side effects on the drug.

Originally created for the treatment and management of Type-2 diabetes, Mounjaro has found itself being marketed to people looking for support with weight-loss.

Mounjaro uses an active ingredient named tirzepatide, which works by reducing a person's appetite and helps regulate blood sugar. The drug works similarly to medications such as semaglutide drugs Ozempic and Wegovy, with the latter also being available for weight management on the NHS.

Combined with changes to a person's diet and lifestyle and the drug can be life-changing in helping people shift the pounds.

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However using Mounjaro doesn't come without side effects, with patients often experiencing nausea as well as hair loss, constipation and a reduced sex drive.

Mounjaro has become the drug of choice for medically assisted weight-loss (Peter Dazeley via Getty Images)
Mounjaro has become the drug of choice for medically assisted weight-loss (Peter Dazeley via Getty Images)

Mongeau is the latest in a long line of celebrities to open up about their experience using the GLP-1 and GIP drugs – and it would appear the 27-year-old had a rather unpleasant experience using the injectable drug.

Detailing her experience in a new episode of her YouTube podcast Cancelled with Tana Mongeau and Brooke Schofield, the influencer revealed that she'd been able to lose 6lbs in just two days while on Mounjaro, but feel victim to some pretty nauseating side effects.

"So I shot up Mounjaro," the content creator began, going on to reveal that she'd been left feeling extremely nauseous.

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"And this is the biggest public service announcement to the whole wide world to never, ever, ever do it. I have been dying this week.

"Like, dying. Like, crawling on the floor."

Mongeau then explained that she'd been forced to take prescription anti-sickness medication Zofran everyday in order to manage the side effects and had been sleeping for over 12 hours at a time.

However influencer Tana Mongeau did not have a positive experience with the medication (Gilbert Flores/Penske Media via Getty Images)
However influencer Tana Mongeau did not have a positive experience with the medication (Gilbert Flores/Penske Media via Getty Images)

According to NHS guidelines, the drug is only offered on prescription to people with a BMI of 40 or higher, which would classify them as 'severely obese'. However Brits have been able to buy the drug from private pharmacies prior to the NHS roll out.

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The medication may also cause complications such as loss in bone density and muscle mass, which is why doctors recommend incorporating protein-rich diets and exercise alongside Mounjaro usage.

However Mongeau did admit that using the medication had been a 'quick fix', adding: "Anything that’s a quick fix, obviously, it works well.

"But I should not have done that."

When asked for comment Mounjaro manufacturer Eli Lilly said the following: "Patient safety is Lilly’s top priority, and we take any reports regarding patient safety seriously. Regulatory agencies conduct extensive independent assessments of the benefits and risks of every new medicine and Lilly is committed to continually monitoring, evaluating, and reporting safety data to ensure the latest information is available for regulators and prescribers. We encourage patients to consult their doctor or other healthcare professional regarding any possible side effects they may be experiencing and to ensure that they are getting genuine Lilly medicine."

Featured Image Credit: Instagram/Tana Mongeau

Topics: Mounjaro, Health, Social Media

Brenna Cooper
Brenna Cooper

Brenna Cooper is a journalist at LADbible. She graduated from the University of Sheffield with a degree in History, followed by an NCTJ accredited masters in Journalism. She began her career as a freelance writer for Digital Spy, where she wrote about all things TV, film and showbiz. Her favourite topics to cover are music, travel and any bizarre pop culture.

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@_brencoco

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