1Capasso R, Angelo A. Effect of piperine, the active ingredient of black pepper, on intestinal secretion in mice[J]. Life Sciences,2002,71(19):2311-2317.
2Atal CK, Zutshi U, Rao PG. Scientific evidence on the role of Ayurvedic herbals on bioavailability of drugs[J]. J Ethnopharmacol,1981,4(2):229-232