5a-reductase inhibitors

Question 1

M?

Answer 1

Reduce size of prostate gland
Inhibit 5a-reductase which converts testosterone to DHT, which helps prostate growth
Inhibiting this prevents enlargement and improves urinary flow
Effect takes many months

Question 2

I?

Answer 2

Second-line treatment after a-blockers

Improve urinary tract symptoms

Question 3

C?

Answer 3

pregnancy

Question 4

A?

Answer 4

anti-androgenic-impotence, reduced libido, gynaecomastia, hair growth inhibition and breast cancer