Age

18–60

Sex

ALL

Healthy volunteers

Not accepted

1. Age: 18-60 years old
2. Sex: both men and women
3. Compliance with the Diagnostic and Statistical Manual of Mental Disorders-5 (DSM-5) diagnostic criteria for major depressive disorder
4. Hamilton Depression Scale scored more than 18 points.
5. No contraindication of taking Lycium barbarum polysaccharide

Evaluation of Efficacy of Lycium Barbarum Polysaccharide in Patients With Major Depressive Disorder