Why does finasteride increase sexual desire in some users while significantly reducing it in others?
    9/4/2026

    From the encyclopedia
    Finasteride →

    Popular 5-alpha reductase inhibitor that lowers DHT, taken as a pill or used topically

    Dutasteride →

    5-alpha reductase inhibitor that blocks both enzyme types, a stronger DHT blocker than finasteride

    At a glance
    In this question or advice post, the primary subjects mentioned are
    💊 Finasteride (oral)
    💊 Dutasteride (oral)
    💧 topical applications (topical)
    the tone is 😐 neutral with varied results.

    Other terms

    Finasteride affects libido differently in individuals due to hormonal changes, increasing testosterone and potentially estrogen, which can either boost or reduce sexual desire. Other treatments mentioned include dutasteride and topical applications, with some users experiencing increased libido and others experiencing a decrease.
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    5 / 5 results

      community Why you may be taking Dutasteride wrong

       86 upvotes 10 months ago
      Dutasteride is more effective than finasteride for hair loss, with optimal dosing at 0.5mg once or twice a week to minimize side effects. Topical application may further reduce side effects while effectively lowering scalp DHT.

      community 3 month into 2.5mg dutasteride - no hairs fall out of my head anymore

      in Technology  37 upvotes 2 years ago
      OP reports that after 3 months on 2.5mg dutasteride, their hair has stopped falling out and is thick again, but they are considering stopping due to potential mood and energy side effects. Other users discuss experiences with finasteride, dutasteride, and side effects, with some suggesting lower doses or alternative treatments like topical applications.

      community What happened to topical dutasteride??

      in Finasteride/Dutasteride  28 upvotes 1 year ago
      Topical dutasteride is considered for hair loss, but concerns about systemic absorption and side effects like reduced libido are common. Users have mixed results, with some preferring oral finasteride or dutasteride despite side effects, while others find topical treatments beneficial but challenging.

      community Topical finasteride has affected my hormones

       25 upvotes 2 years ago
      A 21-year-old experienced hormone changes after using self-made topical finasteride for hair loss, including a 20% decrease in DHT, a 47% increase in testosterone, and a 39% increase in estradiol. The user previously used minoxidil and microneedling but is now seeking ways to balance hormones, possibly through supplements or dosage adjustments.

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      research Hair Biology

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      This review discusses various biologics for hair aging but reports no agent capable of reversing the natural aging process of hair.

      research Discovery of Natural Steroid 5 Alpha-Reductase Inhibitors

      11 citations , December 2018 in “Assay and Drug Development Technologies”
      This review highlights the challenges in screening for steroid 5 alpha-reductase inhibitors and discusses significant variability in the effectiveness of finasteride and dutasteride, calling for standardized testing methods to develop safer, more specific inhibitors from herbal preparations.

      research The Hormonal Background of Hair Loss in Non-Scarring Alopecias

      February 2024 in “Biomedicines”
      This review examines the hormonal causes of hair loss, noting how androgen excess can lead to follicle miniaturization and linking estrogen deficiency and thyroid dysfunction to common alopecia types. It further discusses hormonal treatments such as finasteride, dutasteride, and spironolactone.