REVIEW A specific inhibitor of steroid Type II 5-reductase, an intracellular enzyme that converts the androgen testosterone into 5-dihydrotestosterone (DHT). Finasteride is used in the treatment of benign prostatic hyperplasia (BPH) and male pattern baldness (MPB).
Kaplan SA, Lee JY, Meehan AG, Kusek JW; MTOPS Research Group (2011). Long-term treatment with finasteride improves clinical progression of benign prostatic hyperplasia in men with an enlarged versus a smaller prostate: data from the MTOPS trial. J Urol. 185(4):1369-73. PMID 21334655.