>18480507
Three of forty men developed bilateral gynecomastia upon ketoconazole treatment.
>Gynecomastia with Ketoconazole
https://pmc.ncbi.nlm.nih.gov/articles/PMC181611/

New research finds finasteride causes penis shrinkage in rats
>A new study in the Journal of Sexual Medicine finds that male rats receiving oral finasteride treatment for four weeks had a 25% reduction in the weight of their penis (corpora cavernosa).
Effects of oral finasteride on erectile function in a rat model:
https://pubmed.ncbi.nlm.nih.gov/22375859/