Yes, definitely worth trying! A few mums I know swore by it, said it really helped stretch the perineum gradually so by delivery day, the tissue was more prepared, and some managed to deliver without any tears or episiotomy at all. My friend who delivered a 4kg-plus baby actually had no stitches, and she credited the Epi-No training plus asking her midwife to apply warm compression during the pushing stage. Just make sure you follow the instructions properly and start early enough, it is not something you want to rush in the last week.