Duodart 0.5mg/0.4mg Capsules is a medication used to treat benign prostatic hyperplasia (BPH), a noncancerous enlargement of the prostate gland that can cause urinary symptoms such as frequent urination, weak stream, and difficulty starting and stopping urination. It contains two active ingredients: dutasteride (0.5mg) and tamsulosin hydrochloride (0.4mg). Dutasteride works by blocking the production of a hormone called dihydrotestosterone, which can cause prostate growth, while tamsulosin helps relax the muscles in the prostate and bladder neck to improve urinary flow. Duodart 0.5mg/0.4mg Capsules is taken once daily, with or without food. It may take several months to see the full benefits of treatment, and it is important to continue taking the medication even if symptoms improve. As with all medications, it is important to follow the dosing instructions and recommendations of a healthcare provider.