The best temperature for black goji berries in water is generally 40-50 degrees. Because the black wolfberry contains many trace elements, or vitamins and other components. If the temperature is too high easy to destroy the effective components, if too low, but also not conducive to soak out the effective ingredients, so 40-50 degrees is the best effect. Black wolfberry generally need to simply rinse with warm water before soaking, remove impurities, soak with 40-50 degrees of water, generally soak 30-60 minutes or so to drink the effect is better. Black wolfberry general role is to supplement the liver and kidney, bright eyes, so the treatment of dry eyes, astringent eyes, eye fatigue, or liver and kidney Yin deficiency, always tired of this situation, the efficacy is still good. It can be used either alone or in combination with other medicines for better results.