An underground market for unlicensed slimming drugs is being driven by TikTok fitness influencers and sellers on communication apps, according to new investigations.
Retatrutide, which remains in research studies, is being advertised by online personalities for its supposed weight-reducing properties. Viewers are urged to contact these profiles directly for source information, while also receiving discount codes.
Additionally, a robust market exists on Telegram, where communities with thousands of members share comparison images, injection guides and claims of next-day British shipping. Vendors market the substance there before directing customers to other platforms for transactions.
This medication is an investigational injection developed by US drugmaker Eli Lilly. The drug targets three intestinal hormones – glucagon-like peptide-1, glucose-dependent insulinotropic polypeptide and glucagon. Early trials indicate it could help individuals reduce up to 25% of their total weight. Referred to as the “triple G”, the drug is being promoted online as the next Ozempic.
Nevertheless, physicians and chemists have cautions that the sale of what remains an unapproved medication in the United Kingdom is a cause for concern and could result in individuals administering products of uncertain source.
Several professionals stated the popularity for the experimental drug could be connected to the rising cost of approved slimming treatments such as Mounjaro.
Marketing retatrutide on TikTok or messaging apps is prohibited in the UK, as it is an unlicensed medication that cannot be marketed or distributed for personal consumption under the Human Medicines Regulations 2012.
Several influencers attempt to sidestep the regulations by referring to the substance as a “research chemical” or citing it as “not for human consumption”. The substance is not a restricted drug, but promotion and supply can still breach pharmaceutical, marketing, and consumer regulations, potentially leading to penalties, prosecution or imprisonment.
According to the social media company, the platform has removed violative content and banned related keywords and search suggestions. The company stated it was dedicated to keeping the platform secure and allocating resources in enhancing enforcement strategies.
Research also found communities with up to nine thousand members marketing retatrutide using the platform's integrated search feature, which operates like a online catalog. Typing “retatrutide” immediately displays channels with thousands of users, filled with images of weight loss, glowing testimonials and detailed guides for preparing or injecting at residence.
After minutes of joining one group, a seller posted WhatsApp details, where the majority of purchases occur. The seller sent an instruction manual and promised shipping within 48 hours. When asked whether the substance was genuine, one vendor responded: “You can’t be sure.” Another provided a image of a supposed laboratory certificate. Not one asked about body mass, medical conditions or past usage.
Inside these groups, posts display dark colored parcels with postal service stickers, claiming to include fresh supplies. One communication stated: “It took eight of us to load them this morning.”
Buyers can select between dry substance containers, prepared at home with purified liquid, or ready-to-use pens usually priced at £160 for 20 milligrams. When asked how much time a injector should last, sellers give conflicting answers varying between a several days to “depends on your body”.
A spokesperson for the messaging service said it regularly moderated harmful material on its service including material that promoted the “misuse of controlled medications”. The company noted that it eliminated “millions of pieces of harmful content each day”.
“People are administering materials they cannot confirm. Although the science behind this drug is sound, these digital products may not include what they advertise,” said Jason Murphy, the director of pharmaceutical services at Chemist4U.
Dr Crystal Wyllie of an online medical service connected the increase in demand to recent price rises for authorized weight-loss drugs such as Mounjaro. “With costs increasing, individuals are using social media. But counterfeit treatments are extremely risky. You cannot know what’s contained or whether the environment they were produced in was sterile,” she said.
Her team has already encountered patients injured by personal administration from unconfirmed sources. “We recognize the disappointment, but purchasing from messaging apps or WhatsApp is gambling with your health,” said Wyllie. “These substances could be impure or improperly measured.”
A representative from the pharmaceutical company stated retatrutide was in third stage clinical trials and had not been evaluated or authorized by any regulatory agency globally. “Therefore at this point no one can market [it] for personal consumption,” they said, adding that any product “falsely representing itself as a Lilly investigational substance not yet authorized … may expose patients to potentially serious health risks”.
A tech journalist and digital strategist with over a decade of experience covering UK innovation and startup ecosystems.