Menthol

The Food and Drug Administration (FDA) includes Menthol on its list of substances considered Generally Recognized As Safe (GRAS) for use in food. It is also an approved direct food additive. The FDA has also determined that Menthol is safe and effective in Over-The-Counter (OTC) cold drug products as a topical antitussive, and in OTC anorectal drug products as an analgesic, anestethic and antipruritic.Menthol was not to be genotoxic or carcinogenic in studies by the National Toxicology Program of the United States.
http://ntp.niehs.nih.gov/index.cfm?objectid=BCDD5E64-123F-79...

Link to FDA Code of Federal Regulations for Menthol
Food additives
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfCFR/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
OTC drugs
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...
http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRS...

Menthol may be used in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Directive of the European Union.
Link to the EU Cosmetics Directive:
http://ec.europa.eu/enterprise/cosmetics/html/consolidated_d...