Key takeaways
Lisinopril (Zestril) and atenolol (Tenormin) are both used to treat high blood pressure and to lower the risk of death after a heart attack, but they belong to different classes of medications and work in different ways. Lisinopril is an ACE inhibitor that relaxes blood vessels by blocking a protein called ACE, while Atenolol is a beta-blocker that slows down the heart rate, making it easier for the heart to pump blood. Lisinopril is also used to treat heart failure, whereas Atenolol is used to treat chest pain (angina). Lisinopril is available as a tablet and a liquid, making it a good option for people who have trouble swallowing pills, while Atenolol is only available as a tablet. Common side effects of Lisinopril include cough, dizziness, and headache, whereas Atenolol can cause tiredness, dizziness, and cold hands and feet. Both medications are not recommended during pregnancy or breastfeeding.
