[Berberine action targets and its absorption behavior：how to use old drug for new mechanisms]

A variety of pharmacological effects of berberine (BBR) are constantly being discovered with the deepening of BBR research. What followed is how to rationally use the drug according to these new pharmacological effects. Because of some cardiac toxicity and poor oral absorption, conflicts may arise between improving the bioavailability and controlling the toxicity of BBR. Meanwhile some new therapeutic uses of BBR, such as hypolipidemia, hypoglycemia as well as prevention and treatment of neurodegenerative diseases, need long-termoral administration, thereby may lead to alteration of intestinal flora and potentially affect body's other physiological functions. Based on the stated targets of BBR and related pharmaceutical properties, comprehensive analysis of these issues was conducted in this study. Some suggestions were presented below：the effect of long-term oral administration on body function, especially the intestinal flora, needs to be further investigated; risks shall be considered in changing the composition of the formulation to improve the absorption rate of oral administration; for the medication with higher concentration demand (such as anti-cancer), targeted drug-delivery is worthy to be considered.