Prosta-Tab PR 0.4mg is a medication classified as an alpha-blocker primarily used in the management of benign prostatic hyperplasia (BPH). The active ingredient in Prosta-Tab PR is tamsulosin, which works by selectively blocking alpha-1 adrenergic receptors in the prostate, leading to relaxation of smooth muscles in the bladder neck and prostate, thereby improving urinary symptoms associated with BPH. Clinical studies have shown that Prosta-Tab PR can help reduce urinary hesitancy, urgency, frequency, weak stream, and nocturia in patients with BPH. It is important to follow the dosage regimen as prescribed by a healthcare provider to achieve optimal therapeutic outcomes.