It's possible it's worn off... I got this when I was a little kid, almost ten years ago. My father said it's magic because it's full of love from my two best friends, I guess you'd say - and that's why when you put candy inside, it turns to medicine. But admittedly, it doesn't work as well now as it used to.
[ She's entirely serious about this, even though it sounds like silly little kids playing pretend... ]