Alpha blockers

Definition

Alpha blockers are medications that relax certain muscles and help small blood vessels remain open by blocking the alpha-1 adrenergic receptors. They are commonly used to treat high blood pressure and symptoms of benign prostatic hyperplasia (BPH).

5 Must Know Facts For Your Next Test

1. Alpha blockers are often prescribed for men with BPH to improve urinary flow.
2. Common side effects include dizziness, headache, and fatigue due to lowered blood pressure.
3. They can interact with other medications like beta-blockers and phosphodiesterase-5 inhibitors.
4. Not typically first-line treatment for hypertension but can be used in combination with other antihypertensives for resistant cases.
5. Examples of alpha blockers include tamsulosin, doxazosin, and terazosin.

Review Questions

• What is the primary mechanism of action for alpha blockers?
• List two common conditions that alpha blockers are used to treat.
• Name an example of an alpha blocker medication.

Related terms

Beta Blockers: Medications that reduce blood pressure by blocking beta-adrenergic receptors.

Benign Prostatic Hyperplasia (BPH): Non-cancerous enlargement of the prostate gland causing urinary difficulties.

Phosphodiesterase-5 Inhibitors: Drugs that manage erectile dysfunction by increasing blood flow to the penis.