Despite any conclusive research studies, it is thought that 5α-reductase inhibitors like<unk>  may prevent the formation of neurosteroid metabolites like allopregnanolone from progesterone and hence may mitigate the psycho-cognitive effects of progesterone, particularly if it is administered orally.
Dutasteride
Finasteride
Tadalafil
Ingenol mebutate
Tamsulosin
Cyproterone acetate
Alclometasone
Vardenafil