Demand for weight loss drugs is becoming so “unsustainable” that demand may soon outstrip supply, pharmacists have warned.
The National Pharmacy Association (NPA) said supply problems could encourage people to turn to unregulated online sources, despite the risks involved.
The number of people in the UK using drugs such as Wegovy and Mounjaro has soared to well above a million, with most patients paying to get them privately.
During April, 1.6m packs of Mounjaro and Wegovy were bought in Britain, with the number thought to correlate closely with the number of people using them.
“Spiralling demand for weight loss medication risks going far beyond what is clinically deliverable”, the NPA said.
“Weight loss jabs are one of the biggest drug innovations this century but growing demand for weight loss treatment highlights the need to make sure this is appropriate for those who want it,” said Olivier Picard, the NPA’s chair.
“It’s clear from this polling that more people are interested in getting weight loss jabs than can benefit from weight loss medication.”
Supply of the medicines has been hit by shortages in some parts of the UK, including for higher doses of Mounjaro, the NPA said. Supply has been restricted to some pharmacies, which has stopped some new patients from going on to the drugs.
The Medicines and Healthcare products Regulatory Agency, the UK’s drugs watchdog, has warned patients to obtain the drugs only with a doctor’s prescription, and not from beauty parlours or websites.
Source: The Guardian, 28 July 2025
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