Clove oil and eugenol, one of the chemicals it contains, have long been used topically for toothache, but the U.S. Food and Drug Administration (FDA) has reclassified eugenol, downgrading its effectiveness rating. The FDA now believes there is not enough evidence to rate eugenol as effective for toothache pain.
Definition of exclude - deny (someone) access to a place, group, or privilege, remove from consideration Definition of exclude - deny (someone) access to a place, group, or privilege, remove from consideration
In words such as expel, export, and exclusive, the prefix ex- means out of, outside. Thus, to exclude means basically to close the door in order to keep someone or something out. When the word appears in an advertisement, it's often making an appeal to snobs.