As aging growth, osteoporosis and asteortrisis problem occurs on both sides of my legs. It is serious enough to make my feet swell when walking and so much pain during rest or sleep. I was advised to take two sachets of Naturion Collagen each day. After taking second package of the product, I notice that my pain was diminishing & sleep better without pain. My job is made easier despite knee pain is still felt. In addition, my body is getting stronger and feel relieved when passing water.