There are thought to be about 1.6 million people on weight-loss drugs in the UK. Some people are able to get the injections through the NHS but most buy them privately. The most popular jabs are called Mounjaro and Wegovy. The jabs are highly effective, but experts say users should be aware of the risk of weight gain once they stop taking the drugs. There are many drugs on the market for weight loss, which can be in the form of an injectable pen or a capsule. Weight loss injections which can be prescribed by the NHS are: They are given as weekly injections via pre-filled pens that can be self-administered into the upper arm, thigh or stomach. The drugs work as an appetite suppressant by mimicking a hormone called GLP-1 which makes people feel fuller. Mounjaro also affects metabolism and helps regulate energy balance. Patients generally start on a low level dose which is gradually increased until they reach a maintenance dose. They are always prescribed alongside healthier eating and exercise programmes.…