124 citations,
March 2012 in “JAMA” Testosterone's muscle-building effects do not require its conversion to DHT.
66 citations,
April 2017 in “International Journal of Andrology” Men taking 5α-reductase inhibitors for enlarged prostate have a higher chance of experiencing reduced sexual desire and erectile dysfunction.
57 citations,
July 2016 in “The Journal of Sexual Medicine” 5α-reductase inhibitors increase the risk of sexual dysfunction, especially in men with enlarged prostate.
51 citations,
May 2013 in “The Journal of Steroid Biochemistry and Molecular Biology” Certain drugs that block specific enzymes can help treat prostate diseases.
50 citations,
March 2017 in “PeerJ” Using finasteride or dutasteride may cause long-lasting erectile dysfunction.
46 citations,
October 1999 in “Journal of The American Academy of Dermatology” Finasteride effectively treats male pattern hair loss with a 1 mg daily dose.
44 citations,
January 2013 in “International Journal of Trichology” Finasteride 5 mg/day effectively treats hair loss in postmenopausal women without hyper-androgenism.
44 citations,
January 2007 in “Biological & pharmaceutical bulletin” Black pepper leaf extract contains compounds that can block testosterone effects and promote hair growth.
38 citations,
January 2002 in “Biological & Pharmaceutical Bulletin” Lygodii Spora extract may help treat hair loss by blocking a hair loss-related enzyme and promoting hair growth.
35 citations,
April 2013 in “Sexual medicine reviews” 5-alpha reductase inhibitors slightly increase the risk of sexual and mood side effects, and breast growth in men.
34 citations,
August 2011 in “Journal of Natural Medicines” Puerariae Flos extract may help treat hair loss by blocking a hair loss-related enzyme and promoting hair growth.
34 citations,
February 1993 in “Journal of steroid biochemistry and molecular biology/The Journal of steroid biochemistry and molecular biology” Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.
33 citations,
January 2016 in “Skin appendage disorders” The document concludes that sexual and psychiatric side effects from 5-alpha-reductase inhibitors are reported, but more high-quality research is needed to understand how often they occur.
29 citations,
July 2012 in “The Journal of Sexual Medicine” Rats had lasting erectile problems after stopping a certain medication.
27 citations,
May 2015 in “Neuropharmacology” Dutasteride protects dopamine neurons in Parkinson's mice, but Finasteride doesn't.
25 citations,
February 1989 in “The Journal of Clinical Pharmacology” This document studied minoxidil in healthy volunteers. Minoxidil is quickly absorbed and eliminated from the body.
24 citations,
September 2020 in “Dermatology and therapy” Oral minoxidil 5 mg daily increases hair growth safely in men with hair loss, with minor side effects.
20 citations,
December 1995 in “Journal of Chromatography B: Biomedical Sciences and Applications” Accurate method measures finasteride levels in human plasma using gas chromatography-mass spectrometry.
19 citations,
April 2020 in “Dermatologic Therapy” Dutasteride works better than finasteride for hair loss, with both being safe to use.
17 citations,
June 2012 in “European journal of medicinal chemistry” New steroid compounds effectively inhibit 5α-reductase and may treat hair loss.
13 citations,
January 2017 in “Chemical & Pharmaceutical Bulletin” Certain compounds, especially those with a propionic substituent, could potentially be new treatments for hair loss and similar disorders.
10 citations,
October 1992 in “Hormone and Metabolic Research” Finasteride safely lowers DHT levels without affecting hormone levels, helping with conditions like enlarged prostate, acne, and hair loss.
9 citations,
October 1993 in “The Journal of Clinical Pharmacology” Finasteride doesn't affect antipyrine metabolism, so interactions with cytochrome P-450 enzyme drugs are unlikely.
6 citations,
September 1997 in “Prostate Cancer and Prostatic Diseases” Finasteride 5 mg effectively reduces urinary symptoms and PSA levels in men with enlarged prostates, with few sexual side effects.
5 citations,
August 2018 in “Sexual Medicine Reviews” 5α-Reductase inhibitors do not consistently increase testosterone levels in the blood.
4 citations,
December 2019 in “Minerva Urology and Nephrology” 5-alpha reductase inhibitors may reduce bladder cancer recurrence and improve survival.
3 citations,
October 2015 in “Human Psychopharmacology-clinical and Experimental” Finasteride doesn't affect sleep spindles in men.
2 citations,
May 2019 in “PubMed” Oral finasteride and dutasteride may negatively affect erectile function in rats.
1 citations,
September 2016 in “Actas Dermo-Sifiliográficas” 5-alpha reductase inhibitors may cause sexual side effects, breast complications, and other health risks in men with hair loss.
January 2021 in “Journal of cosmetology & trichology” Ageratum conyzoides L. extract may effectively and safely treat hair loss.