Alfuzosin Hydrochloride (2 brand names, 1 dosage form, 1 route)
Available dosage forms: TABLET, EXTENDED RELEASE.
Routes of administration: ORAL.
Brand Names
- ALFUZOSIN HYDROCHLORIDE
- UROXATRAL
Indications and Usage
Alfuzosin hydrochloride extended-release tablets are indicated for the treatment of signs and symptoms of benign prostatic hyperplasia.
Dosage and Administration
The recommended dosage is one 10 mg alfuzosin hydrochloride extended-release tablet once daily. The extent of absorption of alfuzosin is 50% lower under fasting conditions. Therefore, alfuzosin hydrochloride extended-release tablets should be taken with food and with the same meal each day. The tablets should not be chewed or crushed.
Contraindications
Alfuzosin hydrochloride extended-release tablets are contraindicated for use: in patients with moderate or severe hepatic impairment (Childs-Pugh categories B and C), since alfuzosin blood levels are increased in these patients [see Use in Specific Populations (8.7) and Clinical Pharmacology (12.3)]. with potent CYP3A4 inhibitors such as ketoconazole, itraconazole, and ritonavir, since alfuzosin blood levels are increased [see Drug Interactions (7.1) and Clinical Pharmacology (12.3)]. in patients with known hypersensitivity, such as urticaria and angioedema, to alfuzosin hydrochloride or any component of alfuzosin hydrochloride extended-release tablets [see Adverse Reactions (6.2)]
Mechanism of Action
Alfuzosin is a selective antagonist of post-synaptic alpha1-adrenoreceptors, which are located in the prostate, bladder base, bladder neck, prostatic capsule, and prostatic urethra.
Overdosage
Should overdose of alfuzosin hydrochloride extended-release tablets lead to hypotension, support of the cardiovascular system is of first importance. Restoration of blood pressure and normalization of heart rate may be accomplished by keeping the patient in the supine position. If this measure is inadequate, then the administration of intravenous fluids should be considered. If necessary, vasopressors should then be used, and the renal function should be monitored and supported as needed. Alfuzosin is 82% to 90% protein bound; therefore, dialysis may not be of benefit.