Black wolfberry and red wolfberry both have the role of kidney tonic, except that black wolfberry is wild, compared to red wolfberry, black wolfberry tonic kidney effect is stronger. Although red wolfberry and black wolfberry have kidney tonic effect, but it has strict clinical indications, because wolfberry tonic kidney yin, so if the usual kidney yin deficiency caused by lumbago, lumbago, dizziness, tinnitus, hand and foot heart heat, irritability, insomnia, constipation, urinary red, dry mouth and throat, facial flushing and other symptoms can take wolfberry. If the Yang deficiency fear of cold or loose stool patients are not recommended to take wolfberry, because wolfberry taste slightly cold, and its nature is on the greasy, so if Yang deficiency or spleen deficiency damp people take, not only can not play the role of kidney, but on the contrary may aggravate the Yang deficiency or spleen deficiency symptoms.