I’ve been learning about EOs and two well marketed brands have suggested ingesting EOs is not only not a big deal, but is a good idea. I’ve been really cautious and am not ok with it. I also think that it’s really clever marketing (in other words, half truths) that EOs are “certified therapeutic” vs. “100% pure” EOs.
“The FDA plays no part in the grading or safety uses of essential oils. “Therapeutic grade” is simply a made-up term in the essential oil industry. The FDA does have a list of herbs, including some essential oils, which are  “generally recognized as safe” (GRAS) for use as food items as a very small percentage for flavor only and not nutrition; (i.e. food additives) but that is as far as it goes. This is a food grade standard for food flavoring and not a standard for taking essential oils internally for medicinal purposes”