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Silodosin capsule, a selective alpha-1 adrenergic receptor antagonist, is indicated for the treatment of the signs and symptoms of benign prostatic hyperplasia (BPH) [see CLINICAL STUDIES (14) ]. Silodosin capsule is not indicated for the treatment of hypertension. Silodosin capsule, an alpha-1 adrenergic receptor antagonist, is indicated for the treatment of the signs and symptoms of benign prostatic hyperplasia (BPH). Silodosin capsule is not indicated for the treatment of hypertension. ( 1 )

Severe renal impairment (CCr < 30 mL/min) Severe hepatic impairment (Child-Pugh score ≥ 10) Concomitant administration with strong Cytochrome P450 3A4 (CYP3A4) inhibitors (e.g., ketoconazole, clarithromycin, itraconazole, ritonavir) [see DRUG INTERACTIONS (7.1) ] Patients with a history of hypersensitivity to silodosin or any of the ingredients of silodosin [see ADVERSE REACTIONS (6.2) and DESCRIPTION (11) ] Patients with severe renal impairment [Creatinine Clearance (CCr < 30 mL/min)]. ( 4 ) Patients with severe hepatic impairment (Child-Pugh score >10). ( 4 ) Concomitant administration with strong Cytochrome P450 3A4 (CYP3A4) inhibitors (e.g., ketoconazole, clarithromycin, itraconazole, ritonavir).( 4 ) Patients with a history of hypersensitivity to silodosin or any of the ingredients of silodosin.( 4 )

Postural hypotension, with or without symptoms (e.g., dizziness), may develop when beginning silodosin treatment. ( 5.1 ) In patients with moderate renal impairment, silodosin dose should be reduced to 4 mg once daily. ( 5.2 ) Silodosin should not be used in combination with other alpha-blockers.( 5.5 ) Examine patients thought to have BPH prior to starting therapy with silodosin to rule out the presence of carcinoma of the prostate. ( 5.6 ) Inform patients planning cataract surgery to notify their ophthalmologist that they are taking silodosin because of the possibility of Intraoperative Floppy Iris Syndrome (IFIS). ( 5.7 ) 5.1 Orthostatic Effects Postural hypotension, with or without symptoms (e.g., dizziness) may develop when beginning silodosin treatment. As with other alpha-blockers, there is potential for syncope. Patients should be cautioned about driving, operating machinery, or performing hazardous tasks when initiating therapy [see ADVERSE REACTIONS (6) , USE IN SPECIFIC POPULATIONS (8.5) , CLINICAL PHARMACOLOGY (12.2) , and PATIENT COUNSELING INFORMATION (17) ]. 5.2 Renal Impairment In a clinical pharmacology study, plasma concentrations (AUC and C max ) of silodosin were approximately three times higher in subjects with moderate renal impairment compared with subjects with normal renal function, while half-lives of silodosin doubled in duration. The dose of silodosin should be reduced to 4 mg in patients with moderate renal impairment.Exercise caution and monitor …

8.1 Pregnancy Risk Summary Silodosin is not indicated for use in females.