玄参又称元参、浙玄参、黑参,为玄参科植物玄参的根。中医称其性味甘、苦、咸,寒,入肺、胃、肾经,有清热降火、生津养阴、解毒散结的功效。现代分析表明,玄参含玄参素、单萜苷类、微量挥发油、甾醇、挥发性生物碱、糖类、脂肪酸等成分,有升高白细胞的作用,实验中对环磷酰胺抑制 Scrophulariaceae also known as Yuan Shen, Zhejiang Scrophulariaceae, black ginseng, Scrophulariaceae Scrophulariaceae root. Chinese medicine called it sweet, bitter, salty, cold, into the lungs, stomach, kidney, there are heat and fire, Sheng Jin Yin, detoxification Sanjie effect. Modern analysis shows that Scrophularia scrophulariae contains mefensin, monoterpene glycosides, trace volatile oils, sterols, volatile alkaloids, carbohydrates, fatty acids, etc., which have the effect of increasing leukocytes, and inhibition of cyclophosphamide in experiments.