Cyanoacrylate is safe. Crazy glue, super glue, loctite; it's all the same stuff. The gel type is easier to work with as it doesn't run all over the place.
I use the Loctite brand superglue gel.
-Justin
i dont see anything wrong with whats in it check it out http://en.wikipedia.org/wiki/Cyanoacrylate
if its good enough for medecinal use i think its alright
i use it and its recomended by many on these boards