Side effects of insulin

The main side effects of insulin include: 1. Hypoglycemia: This is the most common side effect, which may be caused by excessive insulin dosage or insufficient food intake. Symptoms include dizziness, fatigue, sweating, palpitations, and in severe cases, it can lead to coma. 2. Weight gain: Insulin promotes the synthesis of proteins and fat in the body, potentially leading to weight gain and increasing the risk of cardiovascular disease and other health problems. 3. Allergic reactions: Some individuals may experience allergic reactions to insulin, such as itching, redness, swelling, or rash on the skin. In severe cases, difficulty breathing may occur. 4. Injection site reactions: These include pain, swelling, and bruising at the injection site. Rotating injection sites can help reduce these reactions.