An underground market for unapproved slimming drugs is propelled by TikTok fitness influencers and sellers on messaging platforms, according to new investigations.
Retatrutide, which is still in clinical trials, is being advertised by social media influencers for its supposed fat-burning properties. Followers are encouraged to message these profiles directly for source information, while also receiving discount codes.
Separately, a flourishing trade exists on messaging services, where communities with thousands of members share “before and after” photos, injection guides and assertions of rapid British shipping. Vendors promote the drug there before redirecting buyers to WhatsApp for purchases.
This medication is an experimental injectable created by American pharmaceutical company Eli Lilly. The treatment targets three gut hormones – GLP-1, GIP and glucagon. Early trials indicate it could assist patients reduce up to a quarter of their total weight. Referred to as the “triple G”, the substance is being promoted digitally as the next Ozempic.
However, doctors and pharmacists have warned that the sale of what remains an unapproved drug in the UK is worrisome and could lead to individuals injecting products of uncertain source.
Some experts said the popularity for retatrutide could be linked to the increasing price of licensed weight loss treatments such as Mounjaro.
Selling the unapproved drug on social media or messaging apps is illegal in the UK, as it is an unlicensed medication that cannot be marketed or supplied for human use under the Human Medicines Regulations 2012.
Several influencers try to sidestep the rules by calling to the substance as a “research chemical” or describing it as “not for human consumption”. The substance is not a restricted substance, but promotion and distribution can still breach pharmaceutical, marketing, and consumer laws, risking penalties, legal action or imprisonment.
Based on TikTok, the platform has taken down violative content and prohibited associated keywords and query recommendations. The company stated it was committed to keeping the platform safe and investing in strengthening compliance measures.
Research also discovered communities with up to nine thousand participants marketing the experimental drug using the platform's built-in search feature, which functions like a online catalog. Entering “retatrutide” immediately displays groups with thousands of members, filled with photos of slimming results, positive testimonials and detailed instructions for preparing or injecting at home.
Within minutes of entering one community, a vendor posted contact information, where the majority of purchases occur. The seller sent an guidebook and guaranteed delivery within two days. When questioned whether the substance was genuine, one seller responded: “You can’t be sure.” Another shared a photo of a alleged testing documentation. Not one asked about body mass, health issues or previous experience.
Within these communities, posts display black plastic parcels with Royal Mail labels, stating to include new batches. One message stated: “It took eight of us to load them this morning.”
Buyers can select between powder vials, mixed at residence with purified liquid, or ready-to-use pens typically priced at £160 for 20 milligrams. When asked how long a pen should last, sellers give conflicting responses varying between a few weeks to “depends on your body”.
A spokesperson for the messaging service stated it regularly monitored harmful content on its service including material that encouraged the “misuse of controlled medications”. The company added that it eliminated “millions of pieces of harmful content each day”.
“People are injecting substances they cannot confirm. Even if the science behind retatrutide is valid, these online versions may not include what they advertise,” said a pharmacy expert, the director of pharmacy at Chemist4U.
Dr Crystal Wyllie of an online medical service connected the surge in demand to recent price rises for authorized slimming drugs such as Mounjaro. “With prices increasing, individuals are turning to online platforms. But counterfeit treatments are highly risky. You cannot know what’s inside or whether the environment they were produced in was sterile,” she explained.
Her team has previously encountered individuals harmed by self-injection from unconfirmed suppliers. “We recognize the frustration, but purchasing from messaging apps or communication platforms is taking chances with your well-being,” said the doctor. “These materials could be contaminated or incorrectly dosed.”
A spokesperson from Eli Lilly stated retatrutide was in third stage clinical trials and had not been reviewed or authorized by any regulatory agency anywhere in the world. “Consequently at this time no one can sell [it] for personal consumption,” they explained, adding that any item “falsely representing itself as a Lilly investigational product not yet approved … may subject users to potentially significant health risks”.
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