Menthol crystals are naturally produced through Mint (Mentha arvensis) essential oil extraction. Menthol is the solid constituent of oil of mint, to which its characteristic odor is due, and was formerly known as peppermint camphor. Menthol is obtained by subjecting the distilled oil of Mentha arvensis oil to a temperature of -22° C, (-7.6° F.) by the aid of a freezing mixture, the menthol crystallizes out in satiny crystals and the mother liquor is removed while the low temperature is maintained. They dissolve readily into alcohol or essential oils, and they can also be dissolved into water or oil at their melting point of 111.2 deg. Menthol is extracted from peppermint, which is also known as Mentha piperita, brandy mint, and lamb mint. Menthol has been used for liver and gallbladder complaints, loss of appetite, nausea, vomiting, respiratory infections, menstrual cramps, toothache, the common cold, cough, and fever. Topically, Menthol has been used for muscle and nerve pain and as an antiseptic.