About this site

The Finasteride Watch website provides evidence and context on the risks of finasteride as a treatment for hair loss in men ages 18–40.

Whereas the pharmaceutical industry and physicians often focus on drug benefits while discounting risks, this site puts risks in the foreground. Multiple perspectives and different types of evidence are considered, from published research to firsthand reports. Every article and document should be reviewed carefully and critically.

The site is published by a former user of finasteride. Launched as a bibliography in early 2020, the site has grown to include numerous bibliographies which encompass all points of view on risks of 5-alpha reductase inhibitors (5-ARIs).

Reader advisory

Finasteride alters levels of steroids throughout the body. Taking the drug can interfere with sexual function, mental state and other systems and functions. Its adverse effects may be disturbing and considered socially unacceptable to discuss. This site includes research and firsthand reports involving sexual dysfunction, changes in male sexual anatomy and physiology, and psychological adverse experiences such as depression, anxiety, suicidal thoughts and suicide.


This site is concerned with adverse effects of finasteride for hair loss, especially when taken by men ages 18–40. This site is not concerned with the safety profile of finasteride for other indications such as benign prostatic hyperplasia (BPH), lower urinary tract symptoms (LUTS) or prostate cancer prevention, typically taken by men aged 55 and older.


This site is published independently without financial compensation. The publisher has not participated in litigation concerning drug harms and is not affiliated with any organization or group focusing on risks of 5-ARIs. In 2020 and 2021, the publisher donated funds to support research on adverse effects of finasteride.

Medical Disclaimer

The information on this site is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. All content contained on or available through this web site is for general information purposes only and is not a substitute for the professional judgment of a health care professional in diagnosing and treating users. Information on this website is subject to change without notice. You are encouraged to confirm any information obtained from or through this web site with other sources, and review all information regarding any medical condition or treatment with your physician. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have seen or read on this site. Your reliance upon information and content obtained by you at or through this site is solely at your own risk. We do not assume any liability or responsibility for damage or injury to you, other persons or property arising from any use of any information or idea contained in this website’s content.

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