61 citations
,
April 2014 in “The Journal of Steroid Biochemistry and Molecular Biology” Finasteride affects brain and blood steroids, causing lasting sexual and emotional side effects.
10 citations
,
January 2019 in “in Vivo” Finasteride boosts stem cell signals for hair growth.
June 2007 in “Nature Clinical Practice Urology” Finasteride for hair loss lowers PSA levels, so PSA values need adjusting when screening for prostate cancer.
February 2012 in “European Urology Supplements” Finasteride for hair loss may cause long-lasting sexual side effects in young males.
July 2022 in “Hair transplant forum international” Finasteride is effective and safe for long-term use in treating hair loss in Japanese men.
1 citations
,
December 2012 in “I P Pavlov Russian Medical Biological Herald” Finasteride increases P-glycoprotein activity in the liver and kidney.
4 citations
,
January 2010 Only finasteride and minoxidil are FDA-approved for male pattern hair loss.
18 citations
,
March 2019 in “Journal of The European Academy of Dermatology and Venereology” Finasteride use doesn't cause sexual dysfunction in men with hair loss.
40 citations
,
November 2020 in “JAMA Dermatology” Finasteride may cause suicidal thoughts and mental side effects, especially in young people with hair loss.
36 citations
,
September 2018 in “American Journal of Clinical Dermatology” Combination of 0.25% finasteride and 3% minoxidil works better than just 3% minoxidil for increasing hair thickness in women.
September 2019 in “Journal of Investigative Dermatology” Finasteride treatment lowers urine androgen and prostaglandin levels, making them potential markers for effectiveness.
October 2013 in “Handbook of Metabolic Pathways of Xenobiotics” Finasteride is mostly broken down in the body and excreted in urine and feces.
December 2022 in “Dermatologie pro praxi” Combining PRP, minoxidil, and finasteride significantly improved hair regrowth.
August 2016 in “Journal of Investigative Dermatology” 
24 citations
,
September 2015 in “JAAD case reports” Finasteride helps hair regrowth in frontal fibrosing alopecia.
33 citations
,
August 2016 in “Indian Journal of Dermatology, Venereology and Leprology” Dutasteride is more effective than finasteride at increasing hair count and reversing hair thinning in men with hair loss, but both have similar side effects.
February 2021 in “The Brown University Psychopharmacology Update” Finasteride use in young people may increase risk of suicidal thoughts and mental health issues.
21 citations
,
September 1994 in “The Journal of Clinical Endocrinology and Metabolism” February 2026 in “European Urology” 
54 citations
,
September 2013 in “Fertility and Sterility” Finasteride can reduce fertility in some men, but stopping it increases sperm count.
June 2011 in “Pharmacopsychiatry” Finasteride improved symptoms in a psychotic patient, but more research is needed.
January 2019 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” 
2 citations
,
October 2017 in “Drug safety - case reports” Finasteride for hair loss may cause painless bleeding in urine and semen.
June 2018 in “Journal of Clinical Periodontology” Finasteride may cause gum side effects in some patients.
5 citations
,
April 1999 in “PubMed” Two drugs, Minoxidil and Finasteride, can modestly maintain or regrow hair on the scalp's vertex with minimal side effects.
July 2012 in “Reactions Weekly” Crushed finasteride tablets can harm pregnant and fertile women.
October 2007 in “Nature Clinical Practice Urology” 
6 citations
,
January 2020 in “Dermatology” Finasteride may increase suicide risk; more research needed.
June 2018 in “Evidence-Based Practice” Finasteride can double the risk of sexual problems like ejaculation issues, low libido, and impotence.
1 citations
,
January 2021 in “Annals of Dermatology”