Dutasteride works to treat urinary retention due to prostate enlargement, but may cause side effects such as decreased libido and dizziness. Dutasteride inhibits the conversion of testosterone to dihydrotestosterone and can work to inhibit BPH. This drug is often used clinically to treat urinary retention due to prostate enlargement, which can reduce the size of the prostate and effectively improve clinical symptoms. Dutasteride has some side effects. First, it may cause breast enlargement or pain in some patients, and it may also affect the immune system, leading to localized edema or itchy skin. In addition, it can adversely affect male sexual function, leading to ejaculatory disorders, decreased libido, and erectile difficulties. Some patients may also experience discomfort such as dizziness. Dutasteride is contraindicated in women, children, those who are hypersensitive to dutasteride, other 5α-reductase inhibitors or any excipients, and those with severe hepatic impairment. The drug is a prescription drug and should be used under medical supervision.