Bergamot oil is not safe to eat as is. That is because of a toxin known as bergapten. For some highly sensitive people, even inhaling the oil can be potentially dangerous if taking certain types of medication due to its interactions with these drugs. The bergapten in bergamot can cause irritation of the throat and airways. Since there are not currently any guidelines on the safe use of internal bergamot oil use, it is best to avoid this entirely.