Welcome

The Post-Finasteride Syndrome Foundation’s primary mission is to facilitate 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.

Read our FDA Citizen Petition to remove finasteride from the market.

Adverse drug reaction reports worldwide

Adverse drug reaction reports worldwide

PFS research studies published

PFS research studies published

Known suicides worldwide

Known suicides worldwide

Doctors & researchers speaking out

Doctors & researchers speaking out

Nations warning of PFS

Nations warning of PFS

National media reports worldwide

National media reports worldwide

Sources

Patient Services

Connect with other PFS patients

Consult knowledgeable doctors

Report your side effects

Read the latest research

Clinical Study of Post-Finasteride Syndrome Launched at Brigham and Women’s Hospital

SOMERSET, N.J., July 1, 2013 – The Post-Finasteride Syndrome Foundation today announced the funding of a major clinical study on post-finasteride syndrome (PFS) at Brigham and Women’s Hospital (BWH), a teaching affiliate of Harvard Medical School. Titled “A Preliminary, Hypothesis-Generating Investigation of the Post-Finasteride Syndrome: Description of the Phenotype, and Elucidation of the Hormonal, Genetic […]

Abstracts from February 2013 PFS Roundtable Research Discussion in Italy

SOMERSET, N.J., March 25, 2013 – The roundtable discussion at the 7th international steroids and nervous system meeting in Orbassano (TO), Italy, February 16th – 20th 2013, included scientific presentations and discussions amongst multiple medical researchers regarding the Post-Finasteride Syndrome. This event was a great opportunity for the PFS Foundation to increase awareness of PFS […]

Post-Finasteride Syndrome Foundation Sponsors PFS Roundtable for Medical Researchers at International Meeting on Steroids and the Nervous System

SOMERSET, N.J., Nov. 5, 2012 – The Post-Finasteride Syndrome Foundation is sponsoring a round-table discussion on PFS at the University of Milan’s 7th International Meeting on Steroids and the Nervous System conference in Torino, Italy, Feb. 19, 2013. Titled “Effects of Finasteride Treatment on the Nervous System,” the event is being organized by Roberto Melcangi, […]

Doctors & Researchers Speaking Out

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

Michael S. Irwig, MD, Attending Endocrinologist
Beth Israel Deaconess Medical Center

Health care professionals should…conduct a full evaluation and a…risk-benefit assessment for patients before each prescription of finasteride.

As prescribers, our primary duty is to do no harm. Health care professionals should keep themselves abreast of these potential signals and, accordingly, conduct a full evaluation and a detailed, personalized risk-benefit assessment for patients before each prescription of finasteride.

—Ongoing Concerns Regarding Finasteride for the Treatment of Male-Pattern Androgenetic Alopecia: JAMA Dermatology, November 2020

Roger S. Ho, MD, Associate Professor of Dermatology
NYU Langone Health

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

Mohit Khera, MD, Director, Laboratory for Andrology Research
Baylor College of Medicine

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

Janet Woodcock, MD, Director of the Center for Drug Evaluation and Research
US Food and Drug Administration