Although the main character of the book is frequently referred to as Alice when the book is discussed, the name Alice is never actually used in Go Ask Alice. The author is Anonymous (whether or not junkpile happens to agree) and the narrator is never referred to by name.
The title, Go Ask Alice, is taken from a Jefferson Airplane song, White Rabbit. In the song, it is clearly obvious that the Alice referred to is Alice in Wonderland, although she seems to be symbolic of all drug users.