I have been using the Formula 303 since my accident & was pleased with the way it worked for me. I have a cleaning business that I do on my own so I'm always climbing on ladders, bending, stretching...Formula 303 is fantastic! I decided to try the Stone Age Wellness muscle relaxer when it came out. I have been using it for a few days & am very pleased with the results of this product too. Thank you for offering these two wonderful products.