Some of the most common side effects of Toprol-XL® include slow heart rate, tiredness, dizziness, and itching. Side effects of the medication that are less common include such things as headache, insomnia, and hepatitis. Although side effects of Toprol-XL are generally minor, there are serious health problems that can occur with the medication. Notify your healthcare provider immediately if you experience chest pain, confusion, or fainting spells with Toprol-XL.
(Click Side Effects of Toprol-XL for a more complete list of Toprol-XL side effects. The full eMedTV article on this topic includes information about potentially serious side effects that may occur with Toprol-XL.)