I've had really bad problems and pain with Frozen shoulder for a couple of years. Through months of trigger point massage and my back buddy cane I've managed to get about 75% of my range of motion back, but the pain was still awful and starting to creep into my other shoulder. After doing some research I started taking one of these every day, and within 3 days my pain was almost completely gone. After a few weeks, I backed down to one every 3rd day or so, and so far I'm still doing really well--virtually pain free in my shoulders. Amazing results and I have nothing else to attribute it to so it had to be these supplements