Xylitol lollipop with orange flavor - the sugar-free treat for kids Birkengold orange lollipops are sugar-free, vegan and with natural flavors. The lollipops contain the valuable ingredients vitamin D, K and magnesium. Vitamin D is needed for normal bone growth and development in children. Vitamin D and magnesium help maintain normal bones and teeth. Vitamin K also helps maintain normal bones. The lollipops are particularly popular with children.