August 2016 in “Journal of Investigative Dermatology” Some men don't respond to common hair loss treatments, but a new inhibitor, FOL-005, shows promise for targeting unwanted hair growth.
August 2016 in “Journal of Investigative Dermatology” Dutasteride improved hair density and thickness in men not helped by finasteride, with minimal side effects.
August 2016 in “Journal of Investigative Dermatology” 
August 2016 in “Journal of Investigative Dermatology” 
August 2016 in “Journal of Investigative Dermatology” 
17 citations,
May 1997 in “Journal of Chromatography B: Biomedical Sciences and Applications” Method accurately measures finasteride in human plasma.
14 citations,
May 2011 in “Drug Metabolism and Disposition” Ketoconazole increases finasteride's effectiveness and lifespan in the body.
98 citations,
April 1997 in “The Journal of Steroid Biochemistry and Molecular Biology” Finasteride effectively blocks rat enzymes, but with varying methods and strength.
33 citations,
November 2008 in “European Journal of Pharmaceutical Sciences” St. John's wort increases finasteride metabolism, reducing its effectiveness; use caution when combining them.
19 citations,
December 2002 in “Journal of Liquid Chromatography & Related Technologies” New method quickly and accurately measures finasteride in tablets.
18 citations,
July 2009 in “Drug Metabolism and Disposition” Finasteride breakdown products found in bile and urine, helps understand drug safety and effectiveness.
10 citations,
May 2010 in “Analytica Chimica Acta” New tests detect finasteride and dutasteride in urine quickly and easily.
4 citations,
September 1994 in “Xenobiotica” Finasteride metabolism varies by age, sex, and P450 inducers, with males processing it faster.
Isotretinoin and tazarotene help treat acne, while minoxidil and finasteride promote hair growth.
5 citations,
January 1997 in “PubMed” 
13 citations,
January 2015 in “Toxicology Letters” Finasteride affects UGT1A4 enzyme, but not enough to cause issues when combined with other drugs.
2 citations,
January 1994 in “Yakubutsu dōtai” Finasteride has different absorption and metabolism in male and female rats, with higher concentrations in certain organs and mostly excreted through feces.
17 citations,
March 1992 in “PubMed”