Dutasteride is a medication that is FDA-approved for the treatment of benign prostatic hyperplasia (BPH) in men. It works similarly to finasteride by blocking the conversion of testosterone to DHT and may be used off-label for the treatment of hair loss.

There is some limited research to suggest that dutasteride may be effective for treating hair loss. The medication works by blocking the conversion of testosterone to dihydrotestosterone (DHT), a hormone that is known to contribute to hair loss in both men and women. By blocking the production of DHT, dutasteride may help to slow down or even reverse the hair loss process.

However, it is important to note that there is limited research on the use of dutasteride for hair loss, and its safety and efficacy in this capacity are not well-established. The medication can also have side effects, including sexual dysfunction, breast enlargement, and depression, among others.