Sildoo 4 Capsule contains Silodosin (4mg) as its active ingredient. This medication is primarily used to treat symptoms of benign prostatic hyperplasia (BPH) in men, a condition characterized by an enlarged prostate. Silodosin works by relaxing the muscles in the bladder neck and prostate, which helps ease the flow of urine and reduces symptoms like difficulty in urination, frequent urination, or a feeling of incomplete bladder emptying. It is effective in improving the quality of life for men with BPH, offering relief from urinary discomfort without significantly lowering blood pressure.