I've never … any
I've never needed it.
I never doubted it.
Je n'en ai jamais entendu parlé.
I've never heard of it.
Je n'en ai jamais pensé quoi que ce soit.
I’ve never thought anything of it.
I've never taken any.
I've never talked about it.
Je dois admettre que je n'en ai jamais entendu parler.
I have to admit that I’ve never heard of it.
Je n'en ai jamais parlé à personne.
I never told anyone about it.