fledgling
My husband has bought various brands over the years, and takes a couple of drops under his tongue most every morning.
Caution: build very slowly to this practice...straight wild oregano essential oil is very powerful stuff!!! Dilute, dilute, dilute!!!
I would suggest to put a quantity of olive oil in a jar, and add ONE drop of the oregano...then use only one drop of the mixture under the tongue, once...with a spoonful of plain olive oil handy, in case you want to dilute even that!
I say this because, when we bought our first, from Young Living Essential Oils, I was making a large kettle of spaghetti sauce, and decided to add two drops, at the end.
Holy smoke, that was powerful flavoring! ...And we LIKE oregano.
Don't know what oregano oil has been doing for my husband, but he is 83 and hasn't quit yet. Early every morning he goes out on a cold collection route, and spends at least an hour (maybe three) out of doors...in the snow and any wind. Last summer he learned he loves gardening. He also sleeps a good nine hours every night, and is as healthy as a horse.
I notice he doesn't buy his mouthwash (thyme) anymore.
I'm sure that oregano oil does a body good...just start slow...okay?
My best,
Fledgling