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Weight loss drug Wegovy has transformed the obesity market and pharmaceutical companies with existing treatments are hoping the resulting demand will boost demand for their older, less effective but cheaper, drugs. A weekly injection of Wegovy, which was launched in the U.S. in June 2021, leads to an average weight loss of around 15%, alongside changes to diet and exercise. Its impact has captured the attention of patients, investors and even celebrities. But supply issues for Wegovy manufacturer Novo Nordisk means the Danish drugmaker has struggled to meet surging U.S. demand, delaying a launch in most of Europe. Insurers and some national governments have also baulked at its cost, while a minority of patients do not respond to it. Vivus and Currax Pharmaceuticals, U.S.-based developers whose treatments have been on the U.S. market for around a decade, hope to benefit from the attention and supply shortage. But scientists and investors say that lower efficacy plus side effects could continue to hold the treatments back.

Novo Nordisk, the Danish drug manufacturer, has launched Wegovy, a weight-loss drug, in the UK market. This semaglutide injection will be available through specialist NHS weight management services for those who meet the National Institute for Care and Excellence (NICE) criteria or privately through registered healthcare professionals. Novo Nordisk allocated a portion of the available supply of Wegovy for NHS services, while confirming the existing shortage of semaglutide and projecting continued constraints in the foreseeable future. The drug can be obtained through the NHS and is additionally accessible for private purchase at pharmacies in the UK. The pricing for a one-month supply varies, ranging from £73.25 to £175.80, depending on the dosage. "We are committed to expanding treatment options for individuals with obesity and share the Government's goal of improving access to obesity care in areas of high unmet medical need," the company said in a statement. "We are closely monitoring Wegovy demand and collaborating with regulators and providers to ensure access to and continuity of treatment for people living with obesity."

Britain plans to launch a pilot programme exploring how new weekly weight-loss shots such as Novo Nordisk's Wegovy can be given to obese patients by general practitioners even as the drug's market launch remains unclear. The government's announcement on the £40 million pilot programme comes after drug cost-effectiveness watchdog NICE in March recommended the use of Wegovy in adults with at least one weight-related condition and a body mass index of 35, but only within the NHS specialist weight management scheme. The timing of Wegovy's launch in Britain - which would be only the fourth country to use it - is uncertain, however, after Novo last month rationed starter doses to secure supply to U.S. patients already on the regimen, after it was overwhelmed by demand there. British Prime Minister Rishi Sunak said on Wednesday (May 7) the pilot and fighting obesity-related diseases could reduce pressure on hospitals. It would also support "people to live healthier and longer lives, and helping to deliver on my priority to cut NHS waiting lists". The NHS endured a tough winter in England in particular, with waiting lists hitting record highs and staff striking for higher pay amid double-digit inflation.