Birt&Tang White Mulberry Leaf tea is a natural, caffeine free drink that is packed with vitamins and minerals. Mulberry Leaf tea helps in strengthening your immune system. Mulberry Leaves contain high levels of magnesium, phosphorus, potassium and calcium which are essential for bone strength, hair and nail growth as well as many other associated health benefi?ts. Birt&Tang White Mulberry Leaf tea is a natural, caffeine free drink that is packed with vitamins and minerals. Mulberry Leaf tea helps in strengthening your immune system. Mulberry Leaves contain high levels of magnesium, phosphorus, potassium and calcium which are essential for bone strength, hair and nail growth as well as many other associated health benefi?ts.