Yes, My son did (he was 8).  And I know adults that have administered it to.
Maybe its worth a call to her to clarify why she advises someone else use it.

Dawn wrote:

> Just had my first prescription for an epi-pen filled and my doctor told me
> that I shouldn't use the pen on myself. Instead, she said that I should have
> some one else administer the dose. I think I recall at least one of the
> mothers on this list saying that her son ate a chicken nugget by mistake
> that contained cheese (looked like the ones without cheese) and had to use
> his epi-pen on himself.  Figure if a child can self-administer I need not
> worry about being alone and needing to self-administer. Just wondering if
> anyone has any experience/ideas to share on this topic.
>
> Thanks!
> Dawn
> :) :) :)