Atenolol belongs to a group of drugs known as Beta-adrenoceptor blocker (often referred to as a beta-blocker). It prevents the heart from beating to fast and is used mainly to treat irregular heart rhythms, it is also used in the treatment of angina, (pains in chest) It reduces high blood pressure, (hypertension) controls the rhythm of the heart beat if it has become irregular and to protect the heart after a heart attack, due to [...]

Oxprenolol is a non-selective beta blocker with some intrinsic sympathomimetic activity (The property of a drug that produces partial agonist effect at the receptor similar to the cholinergic stimulation of the sympathetic nervous system.). It is used for the treatment of angina pectoris and abnormal heart rhythms. It is used to reduce high blood pressure (hypertension), and controls the rhythm of the heart beat if it has become irregular (Arrhythmia), it is also used to [...]

Metoprolol belongs to a group of drugs known as beta blockers. It is given to sufferers of hypertension, (high blood pressure) angina, abnormal heart rhythms (arrhythmias) and an overactive thyroid gland (hyperthyroidism) Beta‐blockers slow the heart beat, lessen the force with which the heart muscle contracts and reduce blood vessel contraction in the heart, brain, and throughout the body. It also helps to help prevent migraine attacks. used to treat and to protect the heart [...]

Propranolol goes all the way back to 1965 when it was first widely available in the UK as a beta blocker. It is often used to treat hypertension (high blood pressure) angina (chest pain caused be a blockages in the arteries to the heart) and abnormal heart rhythms, but it is also helpful in controlling a fast heart rate and other symptoms of an over active thyroid gland. Propranolol can also help in preventing additional [...]

This information is based on taking oral medication where the active ingredient is Timolol maleate. Timolol is known as a Beta-adrenoceptor blocking drug