Has anyone tried castor oil to induce?

Mini • First baby for hubby and I...due October 19, 2015

I am 40 + 2, and don't feel baby will come anytime soon.

Has anyone tried taking castor oil? I am afraid of taking it and having to vomit or have diarrhea. I have read things with so many different outcomes..some women saying it worked for them with no side effects, some saying it made them vomit profusely and didn't start labour, and various other comments.