3 citations,
October 1995 in “Southern Medical Journal” Finasteride may cause breast enlargement, low testosterone a risk factor.
December 2024 in “Australasian Journal of Dermatology” Topical finasteride can cause breast enlargement and tenderness in men.
April 2024 in “JCEM case reports” A man's breast enlargement from low-dose finasteride for hair loss didn't go away, even with treatment, and might be more common than reported.
August 2009 in “Reactions Weekly” Finasteride caused breast enlargement in two men, which improved after stopping the medication.
30 citations,
March 2001 in “Archives of Dermatology” Finasteride can cause one-sided breast enlargement, which disappears after stopping the drug.