Testing the absorption of the extracts of Coreopsis tinctoria Nutt. in the intestinal canal in rats using an Ussing chamber.

Ethnopharmacological Relevance: Coreopsis tinctoria Nutt mainly distributed in Hetian region of Xinjiang at an altitude of 3000m, which is used as Uyghur traditional medicine because of its clearing heat, promoting circulation and removing toxicity and antihypertension, ect. effect.

Aim Of The Study: This research was to study the four ingredients in the extracts of Coreopsis tinctoria Nutt.