Each oil's Product Information Page (PIP) will tell you whether it can be taken internally.
​
The following single essential oils are classified as GRAS (Generally Recognized As Safe) by the US Food & Drug Administration.

SINGLES

Bergamot
​Clove Bud

Lemon

Oregano
​Peppermint
​Pink Grapefruit
​Rose Geranium

Sweet Marjoram

Sweet Orange
​

​BLENDS
​Ease

HepaDetox
​KBDetox
​Slimmer

Tri Remedy
​