Kuril Sai - Intestinal Balance Tea with Siberian Thoroughwax Herb is herbal tea that helps normalize digestion and intestinal flora and detoxify the liver.Do you know what Siberian thoroughwax is famous for? Local Buryat people call this herb Hare"s ear due to the shape of the plant leaves, which resemble small hare"s ears. Thoroughwax is one of the most revered herbs both in Chinese and Buryat-Tibetan medicine. But whereas in China they use only roots, Buryat people use mostly the aerial parts of thoroughwax which are far richer in active ingredients especially for the digestive system30 tea bags