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
Using finasteride for hair loss is like shooting at sparrows with cannons.
Using finasteride for hair loss is like shooting at sparrows with cannons. The drug.…blocks not only the super hormone but also other hormones that affect thinking and psyche, mood and emotions. Discontinuation of the drug should actually make the hormones work again.…but apparently, something breaks down in some men, in the prostate, in the brain, in the whole organism.
—I Didn’t Want to Go Bald. A Pill the Doctor Gave Me Destroyed My Life (English translation): Die Zeit, Feb. 22, 2018
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
For the first time, we demonstrate a tissue-specific methylation pattern of SRD5A2 promoter in PFS patients.
For the first time, we demonstrate a tissue-specific methylation pattern of SRD5A2 promoter in PFS patients [which] could represent an important mechanism of neuroactive steroid levels and behavioral disturbances previously described in PFS… The SRD5A2 promoter was more frequently methylated in the CSF of PFS patients compared to controls (56.3 versus 7.7%).
—Altered methylation pattern of the SRD5A2 gene in cerebrospinal fluid of post-finasteride patients: a pilot study: Endocrine Connections, July, 2019
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
Dec. 19, 2017 Dear Friends: France is taking PFS very seriously. On Oct. 26, the French National Agency for Drug Safety (ANSM) issued a warning that “Changes in mood, particularly depression, and suicidal ideation, have been reported by patients taking Propecia.” The agency—France’s equivalent of the US Food and Drug Administration—noted that “finasteride treatment should […]
Aug. 10, 2017 Dear Friends: On August 4, CEO John Santmann wrote in his 2017 Annual Address, “Recent events in Europe and Asia have given me hope that, before this decade is out, we’ll see the day when no man on Earth is prescribed finasteride without ample warning of its many potential dangers.” Then he […]
Aug. 4, 2017 Dear Friends: Recent events in Europe and Asia have given me hope that, before this decade is out, we’ll see the day when no man on earth is prescribed finasteride without ample warning of its many potential dangers. On May 24, the UK’s equivalent of the US Food and Drug Administration, the […]
July 28, 2018 Dear Friends: Canada has taken an important first step toward keeping its citizens apprised of finasteride’s many potentially serious and persistent side effects. In the June edition of its Health Product InfoWatch, Health Canada (Canada’s version of the US Food and Drug Administration) reported that “New information regarding the risk of muscle-related […]
July 15, 2017 Dear Friends: On July 4, the Korean Ministry of Food and Drug Safety (MFDS) announced it will revise the warning label on Propecia and its generic versions to include depression and suicidal ideation. The move by South Korea’s equivalent of the US Food and Drug Administration came just six weeks after the […]