2 citations
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December 2006 in “Lancet Oncology” Finasteride significantly reduces PSA levels in men, and doctors should adjust PSA readings for those taking the drug.
March 2015 in “The Journal of Urology” Finasteride reduces PSA levels by around 40-50% in BPH patients.
March 2009 in “The Journal of Urology” Low dose finasteride causes only minor changes in PSA levels in men over 50 with BPH.
September 2017 in “ics.org”
April 2007 in “Nature Clinical Practice Urology” Finasteride lowers PSA levels about the same whether taken at 1 mg or 5 mg daily.