1. Regulating the immune system: Polysaccharides and vitamin C in Lycium barbarum can regulate the immune system and enhance physical fitness.

2. Tonifying kidney and strengthening yang: A variety of amino acids and trace elements in Lycium barbarum can promote the function of reproductive system and help men improve their sexual function.

3. Improve eyesight: Lycium barbarum is rich in natural carotene and vitamin A, which helps to improve eyesight and prevent eye diseases.

4. Antioxidant: Polyphenols and flavonoids in Lycium barbarum can scavenge free radicals and resist oxidation.

5. Improve sleep: The black tea in Sanpaotai Black Gouqi Tea can soothe the body and mind and help improve the quality of sleep.

In a word, Sanpaotai Black Gouqi Tea has many health-care functions, which can improve the body's immunity, improve sleep and protect eyesight. However, the specific efficacy not only varies from person to person, but also depends on the individual's physical condition.