I add four drops of the concentrated oil to a tablespoon of organic hemp oil and take it that way whenever I feel something coming on, like a cold etc. Alternatively you can dilute a few drops in some water, swish it around then use it as a high-strength mouthwash/gargle. You could also dilute it in coconut oil or similar and rub it into the soles of your feet for it to be absorbed transdermally- the same works for raw garlic on the feet- it enters your system and cleanses the blood apparently.