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
Blocking 5alpha-reductase by finasteride treatment may have broad consequences for the nervous system.
[W]e have evaluated in male rats the effects of a subchronic treatment with low doses of finasteride.…and the consequences of its withdrawal.…on neuroactive steroid levels…. Interestingly, at the withdrawal, some of these effects persisted, and different changes in neuroactive steroid levels, and in the expression of receptors, were also detected. Altogether these findings suggest that the block of the enzyme 5alpha-reductase by finasteride treatment may have broad consequences for the nervous system.
—Effect of Finasteride, an Inhibitor of the Enzyme 5alpha-Reductase, in the Nervous System: The Journal of Steroid Biochemistry and Molecular Biology, July 2017
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. 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 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 […]
SOMERSET, N.J., April 18, 2017 – Post-finasteride syndrome (PFS) patients suffer from altered levels of critical brain-function regulators, including neuroactive steroids, according to a new clinical study published in The Journal of Steroid Biochemistry and Molecular Biology. Titled Neuroactive Steroid Levels and Psychiatric and Andrological Features in Post-Finasteride Patients, the three-year study also uncovered evidence […]
May 26, 2017 Dear Friends: The UK’s equivalent of the US Food and Drug Administration, the Medicines and Healthcare Products Regulatory Agency (MHRA), has issued a drug safety update on finasteride. The May 24 document, titled Finasteride: rare reports of depression and suicidal thoughts, states: Some men have reported episodes of depressive illness in association with […]