Antihypertensive drugs are medications used to treat high blood pressure. There are several synonyms for the word antihypertensive, which include blood pressure-lowering medications, hypertension drugs, blood pressure reducers, and high blood pressure treatments. These medications work by either dilating the blood vessels or reducing the volume of blood in the body. Some common types of antihypertensive drugs include diuretics, ACE inhibitors, beta-blockers, and calcium channel blockers. It is important to note that antihypertensive drugs should always be taken under the guidance of a medical professional, as they can cause side effects and interact with other medications.