My mom did it when she was pregnant she said it out her into labor but expect to be running to the bathroom ... I never tried it I didn't want that feeling :/
Its a really strong laxative suppose to irritate tour stomach so much it triggers your uterus into contracting also can cause e baby to poo inside the womb so probably not the best method to try :/
You have to be dilated... my sister tried it & it didn't work she wasn't dilated