Finasteride Patient Education Guide

  • Finasteride is an oral medication that affects hormonal conversion pathways. Specifically, it reduces the conversion of testosterone into dihydrotestosterone (DHT), a hormone strongly associated with certain hair loss patterns in men.

  • Finasteride is used to support hair preservation in individuals whose hair thinning is driven by DHT sensitivity. Elevated DHT levels can cause hair follicles to gradually shrink, producing thinner, shorter hairs over time.

  • Finasteride works by:

    • Lowering circulating DHT levels

    • Reducing hormonal signaling that contributes to follicle miniaturization

    • Supporting preservation of existing, viable hair follicles

    Its effect is gradual and depends on consistent use.

  • DHT-related hair thinning follows recognizable patterns and typically progresses slowly.

    Finasteride may support individuals who:

    • Notice thinning at the crown or temples

    • Have a family history of androgen-related hair loss

    • Are in early or moderate stages where follicles remain active

    Early intervention may help slow progression and preserve existing hair density.

  • Can:

    • Slow or stabilize hair loss over time

    • Support maintenance of current hair

    Cannot:

    • Guarantee regrowth in all individuals

    • Produce immediate cosmetic results

  • Finasteride is not indicated for individuals who are pregnant or may become pregnant. Eligibility is determined by a licensed provider after review of medical history.

  • Benefits are typically maintained only with continued use.