A clinical trial investigating the use of Chinese medicine formula (Bushen Huoxue Tongluo or "BHT") for the treatment of chronic subjective tinnitus is underway. It has been active for a few months now, and continues to recruit patients.
Link:
A Chinese Medicine Formula (Bushen Huoxue Tongluo) for the Treatment of Chronic Subjective Tinnitus: A Study Protocol for a Pilot, Assessor-Blinded, Randomized Clinical Trial
Link:
A Chinese Medicine Formula (Bushen Huoxue Tongluo) for the Treatment of Chronic Subjective Tinnitus: A Study Protocol for a Pilot, Assessor-Blinded, Randomized Clinical Trial