Understanding & Treating Obesity

Prescription weight loss medications like Wegovy and Saxenda work by mimicking a hormone called GLP-1, which regulates appetite and food intake. They help you feel fuller for longer, reducing cravings and overall calorie consumption. Combined with diet and exercise, these medications can lead to significant, sustainable weight loss.

You may be eligible if you have a BMI of 30 or higher (obese), or a BMI of 27 or higher with weight-related health conditions like type 2 diabetes or high blood pressure. A clinician must assess suitability using your health history and current medications; BMI alone does not determine eligibility.

Both are GLP-1 receptor agonists, but Wegovy (semaglutide) is newer and typically shows greater weight loss results. Wegovy is injected once weekly, while Saxenda (liraglutide) is injected daily. Clinical trials showed Wegovy patients lost an average of 15% body weight vs 8% with Saxenda.

Common side effects include nausea, diarrhoea, constipation and reduced appetite. Serious but rare side effects include pancreatitis and gallbladder problems. A qualified clinician should explain the risks, monitoring and what to do if side effects occur before treatment begins.