Liu Wei Di Huang Pian (Liu Wei Di Huang Wan, Liu Wei Di Huang Tang, YinVive, Six Flavor Teapills) is among the most regarded ancient Chinese herbal formulas. Today, it is most widely used to nourish Yin of the Yin-Yang principles and is the foundation for many other Chinese medicines. In traditional Chinese medicine, Yin is the feminine and negative principle of Yin-Yang whereas Yang is the masculine and positive principle. A robust interaction and balance of Yin-Yang forms the basis of good health. A diminished Yin can be shown as sweat, low fever, dizziness, tinnitus, emission, soreness in the lower back etc. Yin weakness occurs with age, sexual activity, or chronic disease.