The information provided here is not a replacement for a doctor. You shouldn't use it for the purpose of self-diagnosing or self-medicating but rather so you can have a more informed discussion with a professional TCM practitioner.
In Chinese Medicine lumbago can be treated by two herbs that we have on record. Here is the list below.
Because it is a herb specifically indicated to treat lumbago as can be seen on Eucommia Bark's page.
Its main actions are: Tonifies the Liver and Kidneys. Calms ascendant Liver Yang (hypertension/high blood pressure). Calms a restless fetus.
Because it is a herb specifically indicated to treat lumbago as can be seen on Star Anise's page.
Its main actions are: Removes cold and warms Yang, regulates the flow of Qi so as to relieve pain, increase appetite.