What is it?

Finasteride is a testosterone 5-alpha reductase inhibitor that proved to be useful against hair loss. More precisely, finasteride is an active ingredient with an azosteroid chemical structure. Initially, its use was limited to the treatment of benign prostatic hypertrophy and prostate cancer. However, by virtue of its action mechanism, it has also proved useful in combating hair loss due to hormonal factors. For this reason, its use - at the appropriate dosages - is indicated for the treatment of androgenetic alopecia in men.

When is this procedure indicated?

Finasteride is indicated in male patients aged 18 to 41 years with live to moderate hair loss, but not complete hair loss. It is not effective in the treatment of female androgenetic alopecia, and the active ingredient should not be used by women.

How is it performed?

The drug is formulated as tablets that must be swallowed whole. Going into more detail, the medications used to counteract androgenetic alopecia contain finasteride at a concentration of 1 mg per tablet. The dosage normally used is one 1 mg tablet of finasteride to be taken once a day, with or without food.


Although in most cases finasteride against hair loss seems to be well tolerated, it is not possible to exclude the occurrence of unwanted effects, although, fortunately, these tend not to be particularly widespread. Uncommon side effects that may occur during the course of finasteride treatment are:

  • decreased sexual desire;
  • difficulty getting an erection;
  • ejaculation disorders.

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