No, but to satisfy yourself, whenever you have a question about a medication you've been prescribed Google the website of the manufacturer and something like Drugs.com, which will explain how the drug works and the side effects, and ask your pharmacist. You could ask your doctor, but they're often hard to reach. I would try to find out why you have hypertension, though, and next time you see your doc see if they can tell you that and if you can treat it with dietary changes rather than medication. This drug is in a class called beta blockers that helps with your problem and with other heart irregularities and sometimes is used for anxiety as well.