Key takeaways
Metoprolol succinate (Toprol XL) and atenolol (Tenormin) are both beta blockers used to treat high blood pressure and chest pain. Metoprolol succinate is also used to lower the risk of hospitalization and death in people with heart failure, while atenolol is used to lower the risk of death after a heart attack. Metoprolol succinate is an extended-release medication taken once daily, whereas atenolol is typically taken once daily but can be taken twice daily after a heart attack. Both medications can cause dizziness and tiredness, but atenolol is more likely to cause cold hands and feet. Metoprolol succinate must be taken with food, while atenolol does not have this requirement. Additionally, metoprolol succinate is available in a form that can be sprinkled on food, which is helpful for those who have trouble swallowing pills. Both medications can hide symptoms of low blood sugar and should not be stopped suddenly without consulting your provider.
