Blood pressure drugs work in various ways.
Blood pressure medication has been around for many years and so to a certain extent, they are tried and tested. However some medicines that lower blood pressure can increase cholesterol.
Diuretics help your kidneys flush excess water and salt from your body. Reducing the amount of fluid in your body makes your blood pressure go down. Diuretics often are used with other HBP medicines and sometimes combined into one pill
Beta Blockers act by making your heart beat slower which means your heart pumps less blood through your blood vessels and your blood pressure goes down.
Ace Inhibitors prevent your body from making a hormone that causes blood vessels to narrow, so your blood pressure goes down.
Angiotensin II receptor blockers protect your blood vessels from the angiotensin II hormone that causes your blood vessels to narrow. The blood vessels relax and widen, and your blood pressure goes down.
Calcium channel blockers keep calcium from entering the muscle cells of your heart and blood vessels. This allows blood vessels to relax, and your blood pressure goes down.
Alpha Blockers reduce nerve impulses that tighten blood vessels. This allows blood to flow more freely, causing blood pressure to go down.
Alpha Beta Blockers reduce nerve impulses the same way alpha blockers do. However, they also slow the heartbeat like beta blockers. As a result, blood pressure goes down.
Vasodilators relax the muscles in blood vessel walls. This causes blood pressure to go down.