VSZT increased water excretion and decreased MAE formation to alleviate MAE through regulating gut microbiota, restoring tryptophan and tyrosine metabolism disorders, and affecting cAMP-PKA-CREB-AQP3 and VEGFA-VEGFR2-SRC-VE-cadherine pathway. The gene discussed is CREB1; the disease is disorder of tyrosine metabolism.