Dr. med. Dirk Manski

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Alpha Blocker Terazosin: Side Effects and Dosage

Terazosin is a nonselective α1-blocker with long elimination half-life. Please see section general pharmacology of alpha blocker. Review Literatur: (Chapple, 2004).

figure structural formula of terazosin
Structural formula of terazosin

Indications for Terazosin

Pharmacokinetics of Terazosin

Side Effects of Terazosin

Increased side effect profile since terazosin is a nonselective α1 blocker.

Contraindications of Terazosin

Urological Contraindications:

Conservative treatment of BPH with terazosin is not indicated, if surgical treatment is imperative: chronic urinary retention with renal failure, recurrent hematuria due to prostatic enlargement, recurrent infections and bladder stones.

Cardiac Contraindications:

Hypotension, mechanical heart failure (valvular, pulmonary embolism, pericarditis), congestive heart failure.

Other contraindications:

Terazosin should be paused perioperatively for cataract surgery to prevent an intraoperative floppy iris syndrome.

Dosage of Terazosin

2–10~mg orally once daily, titrate dosage after effect and side-effects, first week 1 mg, second week 2 mg, third week 5 mg, if necessary and possible fourth week 10 mg. Terazosin should be given before bedtime in the evening to reduce side effects.

Index: 1–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Chapple 2004 CHAPPLE, C. R.: Pharmacological therapy of benign prostatic hyperplasia/lower urinary tract symptoms: an overview for the practising clinician.
In: BJU Int
94 (2004), Nr. 5, S. 738–44

  Deutsche Version: Terazosin