The side effects of weight loss drugs vary depending on the medication, but the most common are digestive symptoms such as nausea, diarrhoea, constipation, and stomach discomfort. Some people may also experience headaches, dizziness, fatigue, or mild increases in heart rate. Injectable medications can cause temporary injection site reactions like redness or swelling. Rare but more serious side effects can include pancreatitis, gallbladder problems, or mood changes, which need prompt medical attention. Most side effects improve as your body adjusts, especially if the dose is increased gradually under medical supervision. Always follow your doctor’s advice and report any new or severe symptoms.

References and Further Patient Info

Healthdirect Australia – Weight loss medicines

Therapeutic Goods Administration (TGA) – Weight loss products and safety