I started using Dave's Salves after working a trade show. I suffer from chronic back pain, and this is the first product that has given me real lasting relief. While standing on my feet for 10 hrs a day, 3 days straight, I could barely get out of bed. Within 10 minutes of applying it, I was able to stand up without the agonizing pressure of pain. Immediate relief! I now use Dave's Salves when I have flare-ups. No longer needing ibuprofen, which was destroying my stomach. This has completely changed my life.