Terazosin: brand names and study card

Terazosin — Alpha-1 adrenergic blocker. Study the mechanism, listed uses and warnings from the US label on one sourced card.

Generic name: Terazosin
Brands: Tezruly
Class: Alpha-1 adrenergic blocker
Mechanism: Alpha-1 adrenoceptor antagonist; relaxes smooth muscle, easing the dynamic component of BPH outlet obstruction.
Used for: Signs and symptoms of benign prostatic hyperplasia in adult men; Hypertension in adults
Common side effects: Asthenia; Postural hypotension; Dizziness / vertigo; Somnolence; Nasal congestion
Warnings: Syncope and first-dose effect; Orthostatic hypotension
Interactions: Verapamil

Drug class families: Alpha-1 adrenergic blockers

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Label date: 20250418 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.

Practice

Pronunciation

Terazosin: ter-AY-zoe-sin

Pronunciation is shown for the US English generic name.

Other drugs in the same class

Alpha-1 adrenergic blockers: Labetalol, Tamsulosin, Carvedilol, Doxazosin

Body system

Genitourinary · 11 Drug cards

Compare with related cards

Tamsulosin

Same class family: Alpha-1 adrenergic blockers

Mechanism: Blocks alpha-1 adrenoceptors with selectivity for receptors in the human prostate. Relaxation of prostate and bladder-neck smooth muscle improves urine flow and BPH symptoms.

On both cards: Common side effects — Asthenia

Only on the Tamsulosin card: Used for — Benign prostatic hyperplasia (signs and symptoms) · Common side effects — Headache; Dizziness; Rhinitis; Abnormal ejaculation · Warnings — Orthostatic hypotension, syncope; Priapism; Intraoperative floppy iris syndrome · Interactions — Strong CYP3A4 inhibitors, such as ketoconazole; PDE5 inhibitors: possible symptomatic hypotension; Warfarin: caution is advised because interaction studies are inconclusive

Labetalol

Same class family: Alpha-1 adrenergic blockers

Mechanism: Combines selective competitive alpha1 blockade with nonselective competitive beta blockade.

On both cards: Used for — Hypertension in adults

Only on the Labetalol card: Common side effects — Fatigue; Nausea; Dizziness · Warnings — Postural hypotension / syncope; Bradycardia / heart block; Heart failure · Interactions — Digitalis glycosides and other drugs that slow heart rate; coadministration with non-dihydropyridine calcium-channel blockers such as verapamil is contraindicated; Beta-agonist bronchodilators: bronchodilation may be antagonized; Nitroglycerin: additive blood-pressure lowering

Carvedilol

Same class family: Alpha-1 adrenergic blockers

Mechanism: Racemic mixture: nonselective beta-blockade from the S(-) enantiomer and alpha-1 blockade from both enantiomers; no intrinsic sympathomimetic activity.

Only on the Carvedilol card: Used for — Mild-to-severe chronic heart failure of ischemic or cardiomyopathic origin, usually with other heart-failure medicines; Reduction of cardiovascular mortality in clinically stable survivors of acute myocardial infarction with LVEF at or below 40%; Essential hypertension · Common side effects — Dizziness; Fatigue; Hypotension; Bradycardia; Hyperglycemia · Warnings — Do not abruptly discontinue; Bronchial asthma / bronchospastic conditions; May mask hypoglycemia · Interactions — CYP2D6 inhibitors, rifampin; Digoxin, cyclosporine; Clonidine, reserpine, MAO inhibitors

An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.