“Similarly, lauric acid in combination with oxacillin produced antagonistic action with fractional inhibitory concentration indices ranging … 4.01 to 4.28 at 1024 µg/mL. These findings suggest that interference between oxacillin … palm oils and their constituents can negatively affect the treatment … staphylococcal infections in humans and other animals.”
“The results showed strong concentration dependent antagonistic interactions between palm oils and oxacillin with values of fractional inhibitory concentrations indices ranging from 4.02 to 8.56 at concentrations equal or higher than 1024 µg/mL of the tested oils.”