I've been using this on my ANTIBITOIC DAMAGED tendons for a few weeks now and my pain is so much better. I also try and keep that area warm after the treatment (in my case I wear leg warmers!) and drink LOTS of clean water. Apparently there is a detox factor to the equation. I've tried everything and so far the only thigns that have hekped are: magnesium oil massage, tendlite, wild caught marine collagen.