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2 3 CHAPTER Research While many have debated the internal use of essential oils for years, the practice is continually confirmed and validated through research and studies. Researchers continue to confirm the CHAPTER safety of internal use of essential oils, and there is substantial information to help users stay Safety guidelines within the safe parameters of internal use. FDA GRAS (Generally Recognized as Safe) List Among many resources, the U.S. Food and Drug Administration (FDA) has issued a Generally Recognized as CHAPTER Safe (GRAS) list concerning substances that have been identified as safe for use within food products. Each How to use essential oils internally substance included in the list has thorough documentation of safe internal usage, and includes essential oils that have a well-documented history of safe use. Within this list, the FDA recognizes certain essential oils as appropriate preservatives and flavoring agents that are safe to consume. This list also sets general safety guidelines for consumption, in order to protect users from possible toxicity. While the GRAS list is a helpful resource, it is not the only source for determining which essential oils are safe for internal consumption. As you will read later in this chapter, other research can also show which oils are safe for internal use. 1 CHAPTER 2 For a quick reference, here are the essential oils that have been recognized as generally safe for internal use on the GRAS list: CHAPTER Why use essential oils internally? . . . Basil . . . . . . . . . . . Fennel . . . . . . . . . . . Lemongrass . . . . . . . . . . . Roman . . . Chamomile ........ . . . Bergamot . . . . . . . . . . . Geranium . . . . . . . . . . . Lime . . . . . . . . . . . Rosemary ........... ............................................... . . . Black . . Pepper . . . . . . . . . Ginger . . . . . . . . Research . . . Marjoram . . . . . . . . . . . Thyme ........... . . . Cassia . . . . . . . . . . . Grapefruit . . . . . . . . . . . Melissa . . . . . . . . . . . Wild . . Orange ......... . . . Cinnamon . . . . . . . . . . . . . . Berry . . . . . . . . . . . . . . . . . . . Ylang ........... . . . . . . . . . . . . . . Juniper . . . . . . . . . . . Oregano . . . . . . . . . . . . . . Ylang ........ . . . Clary . . Sage . . . . . . . . . Lemon . . . . . . . . . . . Peppermint ...................... ............................................... . . . . . . . . . . . . . . . . . . . . . . Safety . . . . . guidelines .................... . . . . . . . CHAPTER ........................................