Yes, I've used it. I've had horrific periods throughout my life, but even worse if that's possible in Peri. Mine period pain was the same as when I was in labour...every single month. The Ovira was fantastic. It dulled the pain right down and I was able to do anything I wanted, whereas before, it was two days in bed, doing breathing techniques and gripping on to bed sheets. I also needed no other pain relief. Mine broke because I wasn't careful enough with the cable but I told them how much I needed it to survive and they just replaced it. It was about £100 bit honestly, I would have paid 10x that. It changed my life, no exaggeration.