Ingredients: Magnetitum (calcined) 4%, Rehmanniae Radix Praeparata 30%, Corni Fructus 14%, Moutan Cortex 11%, Dioscoreae Rhizoma 15%, Poria 11%, Alismatis Rhizoma 11%, Bupleurum marginatum 4%.
 
In traditional Chinese medicine, this formula is used to nourish the liver and kidneys, support yin, and calm excessive upward activity of yang. It is applied for symptoms such as tinnitus, reduced hearing, dizziness, and weakness in the lower back and knees, which are commonly associated with a deficiency of kidney essence and disrupted qi flow. It is suitable for younger or middle-aged individuals who experience mild tinnitus without signs of internal heat. If symptoms are persistent and include sensations of heat, restlessness, poor sleep, or worsening at night, which are understood in TCM as deficiency fire rising to disturb the upper body, Er Long Zuo Ci Wan may be a more appropriate choice.