Castor oil?

Anyone used Castor Oil before? I was against it at first, but I'm definitely considering it after my appointment today. Been 80% effaced and 2cm dilated for almost a month. I'm not due until November 9th but I've had high blood pressure and they want to induce if I don't have him by my due date. I know I can always say no to induction, but I'm also concerned for my son. I've tried the walking, bouncing, spicey food, ect.