What are the alpha-blockers and the 5-alpha reductase inhibitors? Alpha-blockers are a category of medicines used for the remedy of BPH. Alpha receptors are positioned inside the bladder and the prostate and so they modulate tone. Read more: http://tipsdiscover.com/health/what-are-the-alpha-blockers-and-the-5-alpha-reductase-inhibitors/#ixzz3XmsY5po0
5-Alpha-Reductase Inhibitors (5-ARIs) The prostate gland contains an enzyme called 5 alpha-reductase that converts testosterone to another androgen called dihydrotestosterone. Finasteride (Proscar) and dutasteride (Avodart), known as 5-alpha-reductase inhibitors (5-ARIs), block this enzyme and thus reduce dihydrotestosterone in the prostate. This process helps to shrink an enlarged prostate and prevent future growth of the prostate.