The main producing area of jujube is Zhejiang Province, which is generally rich in vitamins, even higher than ordinary fruits (apples and pears). Its main functions are: nourishing kidney and liver, nourishing brain and tranquilizing mind, nourishing spleen and stomach, caring skin and blackening hair, preventing cancer and protecting health, moistening heart, lungs and relieving cough. It's best not to eat more. Generally, there can be 10- 15 capsules, which have high medicinal value.