I used it and 6 hrs later I gave birth... it's not clinically supported, as most non-conventional or holistic approaches, but it worked for me. it's different for everyone. I wouldn't ever take advice from someone without first hand experience though and I hate hearing advice no matter how well-intended, from non mom's or non pregnant women (or men! or family). castor oil is a very old school approach and there's risks when self inducing no matter what approach (excessive sex, pineapple juice, etc.). when baby is ready they will come. :) fyi castor oil gives you major major diarrhea as that's it's intended purpose so anyone reading, be prepared. if you are incontinent with your pee right now be extremely cautious with this stuff cause there's worse accidents than pee ;)