REVIEW 4-Aza-5alpha-androstan-1-ene-3-one-17beta-carboxylic acid or Dutasteride (trademark name Avodart, manufactured by GlaxoSmithKline) is a dual (type 1 and 2) 5-alpha reductase inhibitor that inhibits conversion of testosterone to dihydrotestosterone (DHT). It is used for benign prostatic hyperplasia and its chemopreventation, however increases the risk of erectile dysfunction and decrease sexual desire.
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