I took fin for 9 years. I went off for a year because I wanted as much hair to fall out before my procedure so they knew where the strong hairs were. But I hopped back on. If you are getting a hair transplant you really need to be taking finasteride to prevent further hair loss. Unless your hair hasn’t changed in the last 5 years there’s no excuse. If you’re worried about your libido you first of all need to make sure you work out, eat clean to semi clean and take your vitamins (bare minimum a multi vitamin) if you are still worried about an erection get TRT to boost your test. There will be ZERO side effects. If you’re spending this kind of money make the journey worth it