Clove, Eugenia caryophyllata, a spicy aromatic often used in combination with other herbs to make mouthwash and digestive formulas. Powdered cloves have been used to expel parasites. Clove essential oil applied topically has a numbing effect on the nerves. It can be mixed with coconut oil and applied to gums for teething babies or toothaches. Cloves can be taken as a tea, tincture, glycerite, or topical ointment.