why can't I take oregano oil?

HI

I have many infections and done the liver cleanse etc and all the rest over many years. I have been trying to take oregano oil from north american spice compnay at a very low dose and nearly faint. I go yellow and nearly vomit. I have persisted for weeks and still can't get anywhere. I forgot the migraines I get with it as well.

Should I just give up? I can't understand how others are taking 6 drops or more 3 times a day and be able to walk.

Any adivce
Cheers
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