Profound Essence is a very powerful primal Jing formulation. It is suitable for those who require maximum restoration of Jing‚ especially if Jing decline is the result of aging or profound stress. Profound Essence tonifies Kidney essence (Yin and Yang)‚ helps to build blood‚ and tonifies Qi. This product differs from Primal Yin Replenisher because it contains a powerful array of Yang herbs and Qi tonics. It restores BOTH Yin and Yang‚ and it restores Qi‚ whereas Primal Yin Replenisher restores Yin Jing. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose‚ treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.