1. Akha hill tribe Hmong, Lahu and Yao take root stalks, stems from both bring to boil drinking water as a remedy for sore throat, hoarseness (the tree).
1. Hill Railway Akha Miao Lahu and Yao to take root, rhizome, stem and trees were cooked with น้ำดื่ as tablets, a sore throat, a husky voice (the tree).