Just wanted to say that I have purchased Calcet for my mother-in-law for years. She was very insistent that I only bought this calcium supplement for her and no other. I began to suffer back pain, especially upon waking every morning. i decided to try the Calcet Petites Dual Calcium + Vitamin D supplements myself and my back pain went away overnigt. Not only did I not experience anymore back pain upon waking every morning, I also noticed a difference in how much faster my legs recovered from working out with weights. There were times I could hardly get out of bed or up and down the stairs after lunges and squats, but with Calcet I a pretty much pain freee. It really really works. Its underated!!!