The following statements regarding finasteride are true EXCEPT:
It is used in the treatment of benign prostatic hyperplasia
Impotence is well documented alter its use
It blocks the conversion of dihydrolestosteron to testosterone
It is a 5 a reductase inhibitor
Finasteride is a competitive inhibitor of enzyme 5 alpha-reductase which conves testosterone into DHT. DHT is a more powerful androgen than testosterone It is used for the treatment of BPH and androgenic alopecia Adverse effect-cause impotence.(Ref.Essentials of medical pharmacology TD Tripathi 7th edition page no.302)
Endocrinology