Located in southeastern New Mexico, Carlsbad Caverns lie beneath the Earth's surface and were formed when limestone was dissolved by sulfuric acid during the last ice age.
There are three types of rate control medications: Beta Blockers, which slow the heart rate and relax the blood vessels. Examples include Atenolol (TenorminÂ®), Carvedilol (Coregâ¢), Metoprolol (Toprol XLâ¢, LopressorÂ®), and Sotalol (BetapaceÂ®)
Many people who have frequent or severe migraines may use preventive medications, including beta-blockers such as propranolol. Beta-blockers, which slow the heart rate, are used mostly to treat heart conditions. âThese medications arenât for migraine patients who have asthma, certain lung problems or slow heart rate,â Bastings warns. Certain antiepileptic drugs, such as topiramate and divalproex sodium, are also prescribed for migraines.