Hey, Karen, I`m a very firm believer in lavender oil, if it could knock Frank out, it`s pretty potent. I just put a couple drops on a tissue, and it`s also good for anxiety and panic attacks. I also used lavender with pure aloe vera juice on Frank`s neck after his first round of radiation. Believe me, it`s one essential oil, I`m never without, and essential oil of geranium will stop a cold sore in it`s tracks........Hugs, Dee