i haven't studied up on taking castor oil internally, although a friend of mine, who is a nurse, told me she used it to induce labor...
i thought drinking castor oil was for making you poop real good
perhaps you are referring to the Liver Flush that removes gall stones
it is done with olive oil and lemon juice or grapefruit juice
i have done it several times
it is extremely helpful
click the cleansing button the menu bar at the top of the computer screen and it will lead you to the liver/gall bladder flush instructions