I torn my calf muscle while I was hiking, it was the most horrific pain I think I have ever experienced. I was casted for a month. Once, I was out of my cast, I was back to “Chefing on the line” my calf become irritated and was raising its ugly head. So, I surfed the net and found QIVantage being touted by Oprah, so I then read the testimonials. I had tried Everything over the counter and nothing was really helping, so I decided to give it a try. I admit that I was skeptical at first, but it worked, QIVantage helped my body doing something miraculous. My calf stopped hurting after just one treatment. Now I tell anyone that is hurt to give it a try! QI will always be my “go to” injury solution! It works and it smells great too! I keep it on hand, ready for my next “over do” injury!