F.A.Q. Welcome to the Frequently Asked Questions section. Please contact Chun Seung - OHTC for any additional information. How does Acupuncture work? What is Herbology? Why are the herbal prescriptions so costly? Are there any reactions or side effects? What is an O.M.D? What are the qualifications of an O.M.D? How often will I need treatment? What are the cost and fees?