Hysan Pain Relieving Oil Hysan Ho Medicated Oil and Embrocation is made of highgrade Chinese herb, using century old Taoism temple prescription. It is mild and applicable to a wild variety of sickness such as rheumatism bone-ache, dizziness, head ache, bone fractures swelling and bruise, catarrh, and that allover achy feeling. HYSAN HO Adopting the Improved Formula of Singapore Sole Agent by Singapore Hysan Medicing Co. .