TENIF is a medication commonly prescribed for the management of hypertension, or high blood pressure, and certain types of chest pain known as angina. It belongs to a class of drugs known as beta-blockers, which work by blocking the effects of certain natural substances in your body, such as epinephrine, on the heart and blood vessels. This action helps to lower heart rate, blood pressure, and strain on the heart. TENIF may also be used in the treatment of other conditions as determined by a healthcare provider. Like all medications, it can have side effects, so it's important for patients to follow their healthcare provider's instructions closely and report any unusual symptoms.