The Photizo that I bought from Miridia is very helpful. I use it on all three of my horses. My mare has an acute condition. As she is improving I wanted to find out if the device is in fact helpful. I have been using it every day and can see improvement. Then I purposely did not use in for one day and felt that she was limping more than the day prior. As I am trying a lot of different supplements and approaches to aid her recovery, I felt that this might give me a clue with regards to what degree the Photizo treatment aids in her recovery. I am impressed and will continue to use it.