I highly recommend this product. I have major injuries to my knee and hip joints (titanium screws and rods), combined with age and life use have caused me great pain and stiffness, making simple things seem quite difficult most days. I read the reviews and thought I would give it a shot. I swear by this product! I have very little stiffness, most of the pain is gone because I am able to move more freely so exercise is no longer such a traumatic event. Mornings are always busy in our house with getting everyone up and ready for the day; so I throw it in my morning shake, very easy and it works! The benefit of me being able to move more freely is hands down the best!