Natural enhancement pill question?

OK Let's see....your friend tried them and they didn't work. She gave them to you. You found info that says they might cause harm. You are wanting to know if you should take them? They don't work. That's a given. They might cause harm. Why in the world would you take them? You already know thye won't help, and you know they might cause harm. Would you advise your daughter to take them???? If you can answer that yes, then by all means take them.