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BackgroundHistorically, plants have proven their value as a source of phytochemicals with therapeutic potentials and recently they play an important role in the discovery of novel drugs.ObjectivesThe current study aimed to investigate new antiobesity drugs from Plumbago europaea and Plumbago auriculata through the inhibition of the adsorption of dietary lipids. In vitro porcine pancreatic lipase inhibitory tests were conducted with weight reduction property as well as this study aimed to explore the antioxidant potential and to estimate total phenolic, flavonoid, and tannin contents in both of the studied species.MethodsAntioxidant capacity was evaluated using ferric reducing antioxidant power and DPPH assays, and porcine pancreatic lipase inhibitory tests were conducted using the UV spectrophotometric method, while total flavonoid, phenol, and tannin contents were estimated using standard phytochemical analytical methods.ResultsAntioxidant potential and total flavonoid, phenol, and tannin contents of P. europaea were significantly higher than those of P. auriculata, and both of the studied species have potential antiobesity activity in comparison with orlistat.ConclusionResults of the present study show that both of the studied Plumbago species consist of bioactive compounds that can act as lipase inhibitors and therefore can be useful for the development of functional foods against obesity. It can also be used as a source of lead compounds for designing new antiobesity drugs. Further isolation, identification, and characterization of phyto-active compounds responsible for antiobesity action are required to evaluate the full therapeutic potentials of these plants.Graphical abstractInvestigation of the antiobesity and antioxidant properties of wild Plumbago europaea and Plumbago auriculata from North Palestine.