Definition

1. Noun:
   • A type of medication that works by blocking alpha-adrenergic receptors in the body. These receptors are part of the nervous system and, when stimulated, can cause muscles to tighten. By blocking them, these drugs cause muscles to relax. They are primarily used to treat conditions like benign prostatic hyperplasia (BPH), where relaxation of specific muscles improves urinary symptoms.

Usage Examples

• Noun:
  • The urologist prescribed an alpha-adrenergic blocker to help with the patient's difficulty urinating.
  • Alpha-adrenergic blockers are a common first-line treatment for the symptoms of an enlarged prostate.
  • This alpha-adrenergic blocker works by relaxing the smooth muscle in the prostate and bladder neck.

Advanced Usage

• Therapeutic Class: The term is used to classify a drug by its mechanism of action, rather than by a brand name. For example, "Tamsulosin is an alpha-adrenergic blocker."
• Specificity: In more precise medical contexts, these drugs may be referred to as alpha-1-adrenergic blockers or alpha-1 antagonists, specifying the exact receptor subtype they affect.

Variants and Related Words

• Alpha-blocker (n): A common abbreviated form of "alpha-adrenergic blocker."
• Alpha-adrenergic antagonist (n): A direct synonym often used in pharmacological and medical literature.
• Alpha-1 blocker (n): A more specific term for drugs that selectively block the alpha-1 subtype of adrenergic receptors, which is the primary action for treating BPH.

Synonyms

• Alpha-blocker
• Alpha-adrenergic antagonist
• Alpha-1 antagonist (more specific)

Related Phrases

• Adrenergic receptor blocker: A broader category that includes both alpha- and beta-blockers.
• BPH medication: A functional description of its primary use.

Noun

1. any of various drugs that block alpha-adrenergic receptors; used in treating benign prostatic hyperplasia; relaxes the muscles of the prostate and bladder