Pineapples don't do anything
Red raspberry leaf tea strengthens your uterus and prepares it for labor so that when you do go into labor, your contractions will be more effective in dilating you. I drank it with every pregnancy (this is my third) and I love it! My contractions were definitely strong once I went into labor. I dilated 1cm an hour which is pretty good for a first baby. You do have to drink like 3 cups a day tho. I also take evening primrose oil which helps prevent tearing and effaces you.
Red raspberry leaf tea isn't for inducing labour...
My sister tried that it never worked with her. With my second i tryed Evening primrose oil. I took two a day and inserted two down there at night 3days later my waters broke.