When I was younger(72, now)I had recurring prostatitis. The urologist I saw gave me antibiotics and told me to have more sex. I was single and women weren't throwing themselves at me, LOL. I used to frequent a health food store and the manager suggested saw palmetto. Why not? After a few days on it, maybe a week, I began having problems ejaculating. After another week of that, I concluded it was the saw palmetto. Decades later, on the Internet, I read that saw palmetto reduces DHT, which is critical for sexual function.
Now maybe other men have zero problems from it. It could be just me. Try it. You can always stop it.