At least 500,000 people in the UK take either Mounjaro or Wegovy, another weight-loss jab, through private prescriptions

The manufacturers of a new weight-loss drug recently rolled out by the NHS are upping their prices by 170%. Eli Lilly is increasing the price of Mounjaro, which is also used to treat type 2 diabetes, in the UK from September. It comes amid a White House push to get drug makers to raise their prices overseas in order to cut prices in the US.

Mounjaro prices are to double on September 1 says the pharmaceutical giant that makes the weight loss jab. The 15mg pen is expected to cost more than £300.