Heck yes they work! There's a bunch of different "stories" as to why, I know they made a big deal over them not having child resistant caps....but I think the story I read was that some baby overdosed, the mother gave more than the recommended dose, they were investigated and shut down because they are homeopathic. Who knows, but I still used what I had.
The weird thing is that other companies with nearly the same ingredients remained on the shelves for a while. The closest I found (and liked) was the Humphrey's Teething strips, which apparently those can't be found anymore