Excerpted from Bensky:  Chinese Herbal Medicine Materia Medica, 3rd ed.

• Tonifies the yang, augments the yin, and secures the essence and the urine:  for patterns of Kidney yang deficiency with such symptoms as impotence, nocturnal emissions, premature ejaculation, tinnitus, urinary frequency, sore painful back, or vaginal discharge.*
• Tonifies the Kidneys and Liver and improves the vision:  for patterns of Liver and Kidney yin and yang deficiency (e.g. deficient essence) with such symptoms as dizziness, tinnitus, blurred vision, or spots before the eyes.*
• Benefits the Spleen and Kidneys and stops diarrhea:  for diarrhea or loose stools with a lack of appetite from deficiency of both the Spleen and Kidneys.*
• Calms the fetus:  an important herb for habitual or threatened miscarriage.*