What Harm Can Finasteride Do?

Medically reviewedby Edna Skopljak M.D.
WrittenbyLiza Schermann
Last updated

Finasteride is a widely prescribed medication used to treat male pattern baldness (androgenetic alopecia) and benign prostatic hyperplasia (BPH). While it has proven to be effective in slowing down hair loss and improving prostate health, like any medication, finasteride can potentially cause side effects and harm in some individuals.

What Harm Can Finasteride Do?

Finasteride can cause a range of potential side effects, some of which can be harmful or have a significant impact on an individual's quality of life. The most commonly reported harmful effects of finasteride include sexual dysfunction, depression, and breast tenderness or enlargement.

Sexual Dysfunction

One of the most concerning potential harms associated with finasteride is sexual dysfunction. This can include decreased libido, erectile dysfunction, and ejaculatory disorders. While the incidence of these side effects is relatively low (around 3-8% of users), they can have a profound impact on an individual's sexual health and overall well-being.

In some cases, sexual dysfunction may persist even after discontinuing finasteride, a condition known as post-finasteride syndrome (PFS). However, the prevalence and long-term effects of PFS are still debated within the medical community.

Depression and Anxiety

Another potential harm of finasteride is an increased risk of depression and anxiety. While the exact mechanisms are not fully understood, it is believed that the hormonal changes caused by finasteride can affect neurotransmitter levels and potentially contribute to mood disorders.

It's important to note that individuals with pre-existing mental health conditions or a family history of depression may be at a higher risk of experiencing these side effects while taking finasteride.

Gynecomastia (Breast Enlargement)

Finasteride can also cause gynecomastia, which is the enlargement or tenderness of breast tissue in men. This side effect is relatively uncommon, occurring in around 1-2% of users, but it can be distressing and potentially impact body image and self-esteem.

Gynecomastia typically resolves after discontinuing finasteride, but in some cases, it may require medical treatment or surgical intervention.

Other Potential Harms

In addition to the above-mentioned side effects, finasteride has been associated with other potential harms, including:

  • Allergic reactions: While rare, some individuals may experience allergic reactions to finasteride, such as rash, itching, or swelling.
  • Birth defects: Finasteride should not be taken by women who are pregnant or planning to become pregnant, as it has been linked to potential birth defects in male fetuses.
  • Prostate cancer risk: There is some debate about whether finasteride may increase the risk of developing certain types of prostate cancer, although the overall risk remains low.
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Conclusion

While finasteride is generally considered safe and effective for treating male pattern baldness and BPH, it can potentially cause harm in some individuals. The most commonly reported harmful effects include sexual dysfunction, depression, anxiety, and breast enlargement or tenderness.

It's crucial for individuals considering finasteride to discuss the potential risks and benefits with their healthcare provider and to carefully weigh the potential harms against the desired outcomes of treatment. Regular monitoring and open communication with healthcare professionals can help identify and manage any potential side effects or harmful effects promptly.

Additionally, individuals who experience persistent or severe side effects after discontinuing finasteride should seek medical attention, as some conditions, like post-finasteride syndrome, may require further evaluation and treatment.

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