evening primrose?

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I'm 36 weeks and my midwife has recommended to me to start taking 2,000mg of evening primrose capsules orally every night and drinking four cups of red raspberry leaf tea a day. She was saying that it will soften my cervix, and the red raspberry leaf will tone my uterus making my contractions more powerful. I had thought those two things will induce labor... I guess I'm wrong. Has anyone else ever heard about them being used as natural labor inducers?