Kids don't always (pretty much never) like the taste of medicine, but they love lollipops and icy poles. Swiss Miss came up with the genius idea of making liquid medicine into an ice lollipop. The cold dulls the taste buds, so bitter-tasting medicine will go down easier.
Another alternative is mixing in a little bit of sugar or other sweeter-tasting liquid to dilute the medicine a bit, but if you were going to do that, you probably don't even need to go to the trouble of freezing it.
Medicine Ice Lollipop [Swiss Miss]