What is "sage oil"

Sage oil is the essential oil made from the culinary herb sage, Salvia officinalis. In addition to its valuable flavoring characteristics, sage oil can contain as much as 50% thujone by weight. The exact amount varies based on the time in the season and which part of the plant is tested. Thujone is traditionally regarded as one of the active ingredients in absinthe, distinguishing it from "less controversial" alcoholic beverages.

Sage oil has been suggested to boost short-term memory performance in many using it as a dietary supplement. Sage oils can be toxic and may trigger miscarriages, as well as "cause dizziness, rapid heartbeat, and provoke epileptic seizures".