National Institutes of Health

Adverse Events of 5-alpha-reductase Inhibitors

The U.S. National Institutes of Health’s Genetic and Rare Diseases Information Center (GARD) houses information on adverse events of 5-alpha-reductase inhibitors “to provide a list of resources where you can find more information about…post-finasteride syndrome. Studies are underway to understand the safety profile of 5-alpha reductase inhibitor drugs with respect to adverse events (sexual dysfunction, breast outcomes, and depression) and their permanency.”

For the latest information from NIH, click here.


Report Your Side Effects

Regulatory Agencies

Anyone suffering from persistent finasteride side effects is encouraged to report them to the appropriate agency.


Merck & Co., Inc.

Merck & Co., Inc. is the manufacturer of Propecia and Proscar.  To report an adverse experience with a Merck human health product, call the Merck National Service Center at (800)444-2080.

In addition to agencies like the U.S. Food and Drug Administration and World Health Organization, PFS patients are encouraged to report their persistent side effects to, a global, independent pharmacovigilance organization whose database is used by patients, doctors and pharmacists to research prescription drugs and their side effects, ideally to identify problems early on in the life of a drug.


Patient Support


Fellow PFS Patients

In September 2016, the PFS Foundation launched a program to connect PFS patients with one another for mutual support and sharing potentially helpful coping strategies. For more information, please access that announcement here.


Medical Professionals

The following doctors counsel PFS patients and their family members.  (If you would like to suggest adding a medical professional to this list, please email patient manager Philip Roberts at


Irwin Goldstein, MD
Director, Sexual Medicine
Alvarado Hospital
San Diego, CA, USA

Keith Jarvi, MD
Head of Division of Urology
Mount Sinai Hospital
Toronto, Canada

Yonah Krakowsky, MD
Division of Urology
Mt. Saini Hospital
Toronto, Canada

Charles J Ryan, MD
Professor of Clinical Medicine and Urology
UCSF Helen Diller Family Comprehensive Cancer Center
San Francisco, CA, USA
Author: The Virility Paradox

David Ralph, MD
Consultant Urologist
University College London Hospital
London, UK

Alexander Müller, MD
Urology Clinic
University Hospital of Zürich
Zürich, Switzerland

Doris Mannhard, MD
University Hospital of Zürich
Zürich, Switzerland

Gert R. Dohle, MD
Department of Urology
Erasmus MC
Rotterdam, The Netherlands

Dirk Michielsen, MD
Professor of Urology
Ziekenhuis University
Brussels, Belgium

Paul Gittens, MD
Philadelphia Center for Sexual Medicine
Bala Cynwyd, PA, USA

Rachel Rubin, MD
Urologist and Sexual Medicine Specialist
Washington, DC, USA

François Desgrandchamps, MD
Chief of Urology
Saint Louis Hospital
Paris, France

Francois Haab, MD
Chief of Urology
Men’s Health Center
Paris, France

Eric de Bisschop, MD
Urological Surgeon
Aubagne, France

Frank Sommer, MD
Hamburg, Germany

Keong Tatt Foo, MD
Department of Urology
Singapore General Hospital
Singapore, Malaysia

Trevor Thompson, MD
Lagan Valley Hospital
Belfast, Ireland

Kim M. Drasa, MD
Professor of Urology
University of Medicine
Head of Department of Urology & Sexology
Central Polyclinic
Albanian Urologists & Sexologists Association
Tirana, Albania


Steven M Belknap, MD
Research Assistant Professor in Dermatology and Medicine
Northwestern University Feinberg School of Medicine
Chicago, IL, USA

Ralph M Trüeb, MD
Center for Dermatology and Hair Diseases
Zürich, Switzerland

Thomas Kuendig, MD
University Hospital of Zürich
Zürich, Switzerland

Andreas Arnold, MD
Basel, Switzerland

Jean-Luc Schmutz, MD
Department of Dermatology
Hospital Nancy-Brabois
Nancy, France

Néstor Carreño Orellana, MD
Department of Dermatology
Pontifical Catholic University
Santiago, Chile

Hoon Kang, MD
Department of Dermatology
The Catholic University of Korea
Seoul, Korea


Marco Bortolato, MD, PhD
Associate Professor
Department of Pharmacology & Toxicology
College of Pharmacy
University of Utah
Salt Lake City, UT, USA

Jan Tytgat, PhD
Professor of Toxicology & Pharmacology
KU Leuven University
Leuven, Belgium

*Neetu Sharma, PhD
Department of Pharmacology
Government Medical College
Patiala, Punjab, India
*Not a health care provider.

Prof. Chukwu Amarauche, PhD
Pharmaceutical Sciences
University of Nigeria
University of Nigeria
*Not a health care provider.


Bruno Toussaint, MD
Managing Editor
Paris, France


Shalender Bhasin, MD
Director, Research Program in Men’s Health
Brigham and Women’s Hospital
Boston, MA, USA

Michael Irwig, MD
George Washington University School of Medicine
Washington, DC, USA

Eugene Shippen, MD
Shillington Diagnostic Center
Shillington, PA, USA

Inga Wiegratz, MD
VivaNeo Kinderwunschpraxis Frankfurt
Frankfurt, Germany

Karlis Ullis, MD
Santa Monica, CA, USA

Sadeka Shahani, MD
Wellstar Medical Specialists
Marietta, GA, USA

Jacques Young, MD
French Society of Endocrinology
Paris, France

Olivier Chabre, MD
University Hospital of Grenoble
Grenoble, France

Dirk Vanderschueren, MD
Clinical and Experimental Endocrinology
KU Leuven University
Leuven, Belgium

Carmen Hurd, MD
Endocrinology & Metabolism Subspecialty Training Program
University of Manitoba
Manitoba, Canada


Michael A. Rogawski, MD, PhD
Professor of Neurology and Pharmacology
University of California, Davis
Sacramento, CA, USA

Uwe Höller, MD
Medical Director
German Institute for Preventive Medicine
Bergisch Gladbach, Germany

Alan Jacobs, MD
Director, Neuroendocrine Unit
New York-Presbyterian Hospital
New York, NY, USA

Mark L. Gordon, MD
The Millennium Wellness Center
Encino, CA, USA


Hervé LeJeune, MD
Professor of Biology and Reproductive Medicine
Claude-Bernard University
Lyon, France

Michael Zitzmann, MD
Center for Reproductive Medicine & Andrology
University of Munster
Munster, Germany

Amr Abdel Raheem, MD
St. Peter’s Andrology Centre
Institute of Urology
University College London Hospitals
London, UK


Gregoire Cozon, MD
Immunology Service Pavillon F
Edouard Herriot Hospital
69437 Lyon Cedex 03
Note: If you are a PFS patient wishing to schedule an appointment with Dr. Cozon you must first send, via snail mail to the address above, copies your lab tests performed within the past six months. After receiving and reviewing those tests, Dr. Cozon’s office will contact you for an appointment.


Leonard Leichus, MD
Tallahassee, FL, USA

General Practice

Andrew Rynne, MD
Clane General Hospital
Kildare, Ireland

Edmond O’Flaherty, MD
Bio Balance Centre
Dublin, Ireland

Wesley Lindquist, MD
St. Cloud, MN, USA

Cosmetic Surgery

Ilhan Serdaroglu, MD
Aesthetic, Plastic and Reconstructive Surgery
Istanbul, Turkey

Integrative Medicine

Harlan Bieley, MD
Healthy Living and Longevity Medical Center
North Palm Beach, FL, USA

Greg Emerson, MD
Treat the Cause Clinic
Brisbane, Australia

Louis Berthelot, MD
Paris, France

BoDanielle Park, MD
Healthy Body and Soul
Suwanee, GA, USA

Obstetrics & Gynecology

P Ganesan Adaikan, PhD
National University Hospital


Peter M. Thompson, MD
Mood Disorders Research and Treatment Division
Texas Tech University Health Sciences Center
El Paso, TX, USA
CONTACT: Paulina Rodriguez

Matthew Bruhin, PhD
Matthew Bruhin & Associates
San Diego, CA, USA

Rose Hartzell, PhD
San Diego Sexual Medicine
San Diego, CA, USA

Martin Berendt, PhD
Zug, Switzerland

Jessica Kostelnik, PhD
Department of Psychology
University of Virginia
Charlottesville, VA, USA

Beatriz Coca, PhD
Clinical Psychologist
Altadena, CA, USA

Christoph von Gierke, PhD
Frankfurt, Germany

Luis Guilherme Streb, PhD
Staff Psychiatrist
Hospital Conceição
Porto Alegre, Brasil

The doctors listed above are aware of post-finasteride syndrome and, in some cases, see or have seen patients in their own practices who are believed to have the condition. None of these health care professionals, however, professes to know the root cause(s) of PFS, nor claims to have a cure for the condition. Rather, they maintain an interest in helping PFS patients manage the condition as best as possible until clinical research, hopefully, leads to the development of effective therapies. Such management may include proper nutrition and exercise regimens, hormone therapy, and/or psychological/family counseling. The Post-Finasteride Syndrome Foundation is not a referral service for these or any other health care professionals, and itself does not claim to have any effective therapies for PFS.



Propeciahelp is a website and discussion forum for men suffering from persistent sexual, mental, physical and/or hormonal side effects of finasteride (Propecia, Proscar, generics).  If you are suffering from persistent finasteride side effects and need support, visit

PFS Global Support

PFS Global Support is a BlogTalkRadio podcast hosted by Nader Jawad, where PFS patients and medical professionals familiar with the condition share information and offer mutual support.


SolvePFS is a forum for men suffering from persistent sexual, mental, physical and/or hormonal side effects of finasteride (Propecia, Proscar, generics). The site focuses on gathering the results of individual patients’ medical tests, as well as their anecdotal reports of therapies that may or may not be effective in treating post-finasteride syndrome. If you are suffering from PFS and would like to share information and thoughts on possible therapies, visit

French PFS Support Group

A PFS patient in France runs a PFS support group on Facebook for other French-speaking PFS patients and their family members, as well as medical professionals looking to connect with the PFS community.