Birch bark is derived from the outer bark of the birch tree. It is important to understand that simply because something is an organic herb does not mean it can simply be used unadvisedly. Birch bark has no known harmful effects, but it is estimated that as many as 20% of those suffering from hay fever may be allergic to the Betula pubescens' pollen grains. Such individuals should avoid birch bark.
Dried herbs, root extracts, essential oils and even bark of the Betula pubescens can be effective for many things, but it is important to educate one's self before beginning any herbal regimen.
Birch bark has the scientific name of Betula pubenscens. Native to the northern hemisphere's temperate and sub-arctic zones, the birch tree's outer layer has had many different uses over the centuries, ranging from writing paper to the manufacture of canoes. In fact, the birch tree was an object of worship and veneration among the pagan Slavs of early Russia, where it is still the national tree.