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
Even if the incidence of persistent sexual adverse events is 3% to 5%… approximately 900,000 to 1.5 million men would suffer persistent sexual and psychiatric adverse events.
[A]pproximately 30 million young men, worldwide, would be prescribed finasteride or dutasteride to treat male pattern hair loss. Even if the incidence of persistent sexual adverse events is 3% to 5%, which may be viewed as a small number, approximately 900,000 to 1.5 million men would suffer persistent sexual and psychiatric adverse events. By no means this would be considered a small number and should not be dismissed or ignored.
—Post-finasteride syndrome: a surmountable challenge for clinicians: Fertility and Sterility, January 2020
We wouldn’t recommend that any man take [finasteride], especially not young men.
We are certainly very cautious, because we see the side effects. We wouldn’t recommend that any man take [finasteride], especially not young men. The longer they take it, the greater the risk of experiencing persistent side effects, including after they’ve stopped.
—Do Anti-Baldness Remedies Make You Impotent? Puls, SRF-TV, May 7, 2018
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
Aug. 4, 2018 Dear Friends: November 23 is a day I wish I could strike forever from the calendar. For it’s the anniversary of my son Randy’s death. And this coming November 23 will be particularly difficult, marking a decade since his passing. On that day in 2008, despite my degrees from Johns Hopkins and […]
July 31, 2018 Dear Friends: Thirty-thousand Frenchman can’t all be immune to PFS. And the nation’s most widely read news magazine seems bent on proving it. In a July 21 feature story headlined Finasteride, the Controversial Drug that Medical Authorities Continue to Defend (English translation here), investigative reporters Camélia Echchihab and Emre Sari write: “Can […]
July 6, 2018 Dear Friends: Apparently heeding an appeal by Germany’s largest weekly newspaper, the Federal Institute for Drugs and Medical Devices (BfArM) has dispatched a so-called Red Hand Letter to doctors and pharmacists nationwide, informing them of severe and persistent adverse drug reactions (ADRs) to finasteride. Five months ago, we told you that Die […]
May 20, 2018 Dear Friends: Yet another European nation has taken to the airwaves with PFS awareness. This time it’s Switzerland. The network is Swiss Radio and Television (SRF). And the program is Puls. On May 7, the weekly health-news magazine debuted a special report titled Do Anti-Baldness Remedies Make You Impotent? (English-subtitled version here.) […]
April 30, 2018 Dear Friends: Roberto Cosimo Melcangi, Ph.D., head of the Neuroendocrinology Unit in the Department of Pharmacological and Biomolecular Sciences at the University of Milano, has published a new paper in the current issue of Endocrine: International Journal of Basic and Clinical Endocrinology. Titled Post-ﬁnasteride syndrome and post-SSRI sexual dysfunction: two sides of […]