Theobid is a medication used to treat heart conditions and prevent heart attacks. It belongs to a class of drugs called beta blockers. There are several synonyms for Theobid, including Atenolol, Metoprolol, Propranolol, and Bisoprolol. These medications work in a similar manner to block the effects of adrenaline on the heart, reducing blood pressure, slowing heart rate, and decreasing the workload on the heart. Your doctor will determine which medication is best for you based on your medical history, overall health, and the severity of your condition. It is important to always take your medication as prescribed to ensure optimal benefits and reduce the risk of side effects.