Alfuzosin is used for the treatment of functional symptoms of Benign Prostatic Hyperplasia (BPH). It is also used as a short term treatment of acute urinary retention (AUR) related to BPH patients (over 65 years) in association with catheterization.
Alpha adrenoceptor blocking drugs
Alfuzosin Hydrochloride is a selective antagonist of post-synaptic a1 adrenoreceptors, which are located in the prostate, bladder base, bladder neck, prostatic capsule, and prostatic urethra. Alfuzosin Hydrochloride relaxes the tone of the prostate smooth muscle, prostate capsule, bladder neck and proximal urethra. It competitively and selectively binds to the post synaptic a1-adrenergic receptors in the lower urinary tract. It also relaxes sympathetic nervous stimulation, reduces resting urethral pressure and inhibits urethral hypertonia-induced sympathetic nervous stimulation. As an uroselective agent, Alfuzosin Hydrochloride preferentially binds to prostatic a1 receptors, blockage of these receptors result in reduction of BPH symptoms, improvement of urine flow and decreased potential for hypertensive events.
Benign prostatic hyperplasia: The recommended dose is 10 mg to be taken once daily after a meal. Acute Urinary Retention: In patients 65 years and older, 10 mg daily after a meal to be taken from the first day of catheterisation. The treatment should be administered for 3-4 days, 2-3 days during catheterisation and 1 day after its removal. In this indication no benefit has been established in patients under 65 years of age or if treatment is extended beyond 4 days. Alfuzosin Hydrochloride tablet should be swallowed whole.
Combinations contra-indicated: Alpha-1-receptor blockers. Combinations to be taken into account: Antihypertensive drugs, nitrates, potent CYP3A4 inhibitors such as ketoconazole, itraconazole and ritonavir. Repeated 200mg daily dosing of ketoconazole, for seven days resulted in a 2.1-fold increase in Cmax and a 2.5-fold increase in exposure of Alfuzosin Hydrochloride 10mg when administered as a single dose under fed conditions (high fat meal). Other parameters such as tmax and t1/2 were not modified. Cmax and AUC of Alfuzosin Hydrochloride 10mg, when administered as a single dose under fed conditions, increased 2.3- fold and 3.0- fold, respectively following 8-day repeated 400mg ketoconazole daily dosing. The administration of general anaesthetics to patients receiving Alfuzosin Hydrochloride could cause profound hypotension. It is recommended that the tablets be withdrawn 24 hours before surgery.
Other forms of interaction: No pharmacodynamic or pharmacokinetic interaction has been observed in healthy volunteers between Alfuzosin Hydrochloride and the following drugs: warfarin, digoxin, hydrochlorothiazide and atenolol.
Alfuzosin Hydrochloride tablet is contraindicated for hypersensitivity to Alfuzosin Hydrochloride, history of orthostatic hypotension, combination with other alpha-1 receptor blockers, hepatic insufficiency. The administration of general anesthetics to patients receiving Alfuzosin could cause profound hypotension. It is recommended that the tablets be withdrawn 24 hours before surgery. If symptoms of angina pectoris start or get worse, taking Alfuzosin should be stopped.
Dizziness, Headache, Fatigue, Vertigo, Malaise, Tachycardia, Palpitation, Nausea, Abdominal pain, Rash, Diarrhea, Postural hypotension, Syncope, Dry mouth.
Due to the type of indication this is not applicable and should not be used by women.
In case of overdosage, the patient should be hospitalised, kept in the supine position, and conventional treatment of hypotension should take place. In case of significant hypotension, the appropriate corrective treatment may be a vasoconstrictor that acts directly on vascular muscle fibres.
Store in a cool and dry place, protected from light
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