Is finasteride safe to take

Not worth the risks and life long commitment. Just buzz it off if you ever reach that point.

For what’s it’s intended purpose yes . You should see your doc first.

In some cases there's erectile dysfunction, but it's a really minor risk

https://www.webmd.com/drugs/drugreview-1548-finasteride-oral

Google it

I have no idea but I would suggest you talk to your Doctor rather than SW 🙂