I have severe migraines and can only rely on painkillers. I had tried acupuncture treatment but it was expensive so I decided to buy an acupuncture pen. At first its price made me wonder how it works, the day I received the pen I was having a headache, I thought I'd give it a try, it only took a minute and my head didn't hurt, you can believe it It's working. Great product, I would recommend it!