The Post-Finasteride Syndrome Foundation’s primary mission is to fund research on the characterization, underlying biologic mechanisms and treatments of post-finasteride syndrome (PFS). Other goals include generating public awareness of PFS and providing support for patients suffering from the condition.
Adverse drug reaction reports worldwide
PFS research studies published
Known suicides worldwide
Doctors & researchers speaking out
Nations warning of PFS
Men under the age of 40 who use finasteride for alopecia are at risk for suicide if they develop persistent sexual adverse effects and insomnia.
An important pattern of symptoms was common among all cases who committed suicide in the setting of finasteride use – insomnia and persistent sexual dysfunction after medication discontinuation. Insomnia and fatigue/tiredness were some of the most debilitating symptoms… Men under the age of 40 who use finasteride for alopecia are at risk for suicide if they develop persistent sexual adverse effects and insomnia.
—Finasteride and Suicide: A Postmarketing Case Series: Dermatology, January 14, 2020
[A]t least 17 countries…have warned…of the potential for depression, sexual side effects, or both.
Emerging post-marketing reports of persistent depression and sexual side effects have led to growing concerns about the safety of 5α-reductase inhibitors and prompted product labeling changes in many regulatory jurisdictions. Since 2008, at least 17 countries including the United Kingdom and the United States have warned prescribers of the potential for depression, sexual side effects, or both with finasteride.
Two subjects—eight percent—committed suicide during or after the study.
While the sexual side effects of 5ARIs are well known, there may be persistent genitourinary, physical, psycho-cognitive, anti-androgenic and penile vascular changes after 5ARI discontinuation. Use of 5ARIs for treatment of AGA may lead to persistent sexual, genitourinary, physical, psycho-cognitive, and anti-androgenic sequelae even after cessation of 5ARI therapy… Two subjects (8%) committed suicide during or after the study.
—Penile vascular abnormalities in young men with persistent side effects after finasteride use for the treatment of androgenic alopecia: Translational Andrology and Urology, April 2020
FDA is concerned that use of finasteride by pediatric patients may pose long-term safety risks.
Finasteride inhibits Type II 5(alpha)-reductase, which metabolizes testosterone to the potent androgen 5(alpha)-dihydrotestosterone. FDA is concerned that use of finasteride by pediatric patients may pose long-term safety risks regarding growth, development and sexual function.
—FDA response to Merck & Co.’s citizen petition requesting that finasteride be added to the List of Approved Drugs for Which Additional Pediatric Information May Produce Health Benefits in the Pediatric Population: May 2000
July 20, 2019 Dear Friends: Phase III of the PFS Foundation-sponsored research at the University of Milano (UniMi), which was designed to “study whether epigenetic modifications occur in PFS patients,” has successfully demonstrated epigenetic modifications in PFS patients. Titled Altered methylation pattern of the SRD5A2 gene in cerebrospinal fluid of post-Finasteride patients, the pilot study […]
June 5, 2019 Dear Friends: PFS naysayers’ days may be numbered. According to new research in the world’s most influential dermatology journal, medical science is leaning further toward the conclusion that finasteride can cause sexual dysfunction in men taking a 1-mg dose for hair loss. The paper, titled Sexual dysfunction in men taking systemic dermatologic […]
May 30, 2019 Dear Friends: If PFS awareness is what it takes to unite Germany and France, so be it. Last week brought a slew of media coverage out of Deutschland that closely mirrors what we saw a month earlier in the French Republic. The awareness assault began May 21 with a report on the […]
April 29, 2019 Dear Friends: The French are not fond of finasteride. March brought a barrage of media coverage in the nation’s escalating efforts to warn citizens against the medication’s potential dangers. On the broadcast front, three network news programs highlighted the suffering of PFS patients. In a segment on the France 5 program Allo […]
April 11, 2019 Dear Friends: Today marks yet another milestone in PFS awareness: Spanish speakers across the globe can now read all about the condition—aka “síndrome post-finasterida” (SPF)—in their native tongue. To access our Spanish-language content, simply click the Spanish flag aside the search box at the top of any pfsfoundation.org page. To toggle back […]