“…Frankincense oil NE were found to be effective in inducing apoptosis in cancer cells with minimal cytotoxic effects on normal lung cells, demonstrating the potential of frankincense oil NE to enhance the activity of systemic anti-lung cancer drugs [ 22 ]. In addition, many other volatile oils and their important constituents, including buckwheat flavonoids [ 23 ], limonene [ 24 ], cinnamon oil, coconut oil, sunflower oil, olive oil, palm oil, jojoba [ 25 ], red raspberry seed [ 26 ], peppermint [ 27 ], tea tree [ 28 ], clove [ 29 , 30 ], oregano [ 31 ], chilli pepper [ 32 ], and citrus [ 33 ], linseed [ 34 ], cinnamon [ 23 ], bitter fennel [ 24 ], thyme [ 35 , 36 ], Carlina acaulis L. [ 37 ], fritillary [ 38 ], lemongrass [ 39 , 40 ], cumin [ 41 ], lemon [ 42 ], peppermint [ 43 ], black pepper [ 44 ], cloves [ [45] , [46] , [47] ], lemon [ 48 ], fennel [ 49 , 50 ], Cinnamon [ [51] , [52] , [53] ], Lavender [ 54 , 55 ], Laurel [ 56 ], Peppermint [ 49 ], Thyme [ 57 ], Astragalus [ 58 ], Celandine [ 59 ], Cumin [ 60 ], Nettle [ 46 ] and other volatile oils of TCM, were loaded in NE to improve solubility, solubility and bioavailability. NE have extraordinary properties and are expected to be nanocarriers for hydrophobic drugs.…”