Adrenergic antagonist
Adrenergic Antagonist
Adrenergic antagonist (pronunciation: ad-ren-er-jik an-tag-o-nist) is a type of drug that inhibits the activity of adrenergic receptors. These drugs are also known as adrenergic blockers or adrenoceptor antagonists.
Etymology
The term "adrenergic antagonist" is derived from the Greek words "adrenes" meaning adrenal gland, and "ergon" meaning work. The term "antagonist" comes from the Greek "antagonistes", meaning opponent or rival.
Function
Adrenergic antagonists work by blocking the effects of adrenaline and noradrenaline, two hormones that are responsible for the body's fight or flight response. By blocking these hormones, adrenergic antagonists can help to reduce heart rate, blood pressure, and anxiety.
Types
There are two main types of adrenergic antagonists: alpha blockers and beta blockers. Alpha blockers work by blocking the alpha adrenergic receptors, while beta blockers work by blocking the beta adrenergic receptors.
Alpha Blockers
Alpha blockers, also known as alpha-adrenergic antagonists, are used to treat conditions such as high blood pressure and benign prostatic hyperplasia.
Beta Blockers
Beta blockers, also known as beta-adrenergic antagonists, are used to treat conditions such as angina, heart failure, and hypertension.
Side Effects
Like all drugs, adrenergic antagonists can have side effects. These can include dizziness, fatigue, and nausea. In some cases, they can also cause a slow heart rate or low blood pressure.
Related Terms
External links
- Medical encyclopedia article on Adrenergic antagonist
- Wikipedia's article - Adrenergic antagonist
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