I want to buy some calcium tablets for my mother recently. Many people recommend Tomson Bianjian collagen chondroitin calcium tablets. What is the difference between this calcium tablet and other calcium tablets? Hello, Tomson Bianjian collagen chondroitin calcium tablet is a triple supplement of calcium, collagen and chondroitin sulfate, which can enhance bone density and improve the hardness and elasticity of bones. It can be used for people with poor calcium supplementation for a long time, people who need to increase bone density and flexibility through regular exercise, people with poor flexibility, people with difficulty in bending over, people with osteoporosis or easy fracture.