Let's have some coltsfoot tea! Or not! This tradition is responsible for a lot a liver problems, even deaths in children. But it must taste good. In Austria, they developed plants that are free of the toxic alkaloids, and continue to use it.. So if you're determined to enjoy a cup, look for the 'Wien" variety. Coltsfoot was used in herbal medicine to treat a wide variety of ailments. It certainly produces results, if not cures.