People have been using Chaga mushroom (Inonotus obliquus) for treatments already for thousands of years, but the scientific research for studying its effects started only a few hundred years ago. Yet only for the last few decades, Chaga has been under a more focused sight for scientific research. It is interesting to know that 155 years ago, the first scientific research was made about Chaga mushroom by a scientist professor Johann Georg Noël Dragendorff in Tartu University.
Chaga mushroom research has focused both on the effects of different extracts made from Chaga and also specifically on the effects of bioactive substances found in the mushroom. Allegedly, Chaga consists of more than 200 different bioactive compounds. The bioactive compounds that have been enquired into the most are triterpenoids (inotodiol, betulin, betulinic acid), polysaccharides, polyphenols and melanin.