Schizandra Berry Powder (Wu Wei Zhi) tonify the heart, lung, and kidneys and astringe the essence. This herb is considered useful for chronic cough with deficiency of the lung and kidney. It is used for kidney deficiency and essence leakage with such symptoms as nocturnal emissions, night sweats, chronic diarrhea, and urinary incontinence. It also calms the spirit when there is deficiency of the heart and kidney with such symptoms as palpitations, insomnia, forgetfulness, and dream-disturbed sleep. This herb is said to have the power to help one from losing physical, mental, and spiritual energy. Contraindications: Schisandra berries SHOULD NOT BE USED by those with internal heat or by those with an externally contracted disease. Dose: 2-9 grams