All weight loss injections work in a similar way, depending on which active ingredient is used (liraglutide, semaglutide, or tirzepatide).

L- iraglutide is a GLP-1 (glucagon-like peptide 1) agonist. It attaches to GLP-1 receptors, mimicking the hormone. By doing this, it controls hunger levels so you eat less without feeling hungry throughout the day. It also delays the emptying of your stomach, which helps you feel fuller for longer.

S- emaglutide also works by mimicking GLP-1. This affects the parts of your brain responsible for hunger, sending a signal to your brain that you are full. It also controls blood sugar levels, which helps with cravings.

T- irzepatide is a GLP-1 agonist, meaning it works the same way as l- iraglutide and s- emaglutide by controlling hunger levels and cravings. It also imitates GIP (glucose-dependent insulinotropic peptide), a hormone released in the small intestine. This can improve how your body breaks down fat and sugars.

Weight loss injections are effective when used alongside an exercise and diet regime. For instance, studies found that once-weekly s- emaglutide injections, such as Wegovy, can sustain and reduce body weight alongside lifestyle changes.

You should start seeing results within a few weeks of starting to take weight loss injections and get the best effect with long-term use (12 weeks or more).

Yes, weight loss injections are a safe treatment option. Your doctor will check your medical history and medications to make sure your chosen treatment option is suitable.