I was diagnosed with osteoporosis and osteopenia 5 years ago. After researching articles across the internet, I began taking Bone-Up, strontium, Vit D3 and K2. My bones have returned to normal. An article I read at that time noted that Jarrow was the only company that passed California's laws on lead levels in calcium products. I have recommended this product and the others mentioned to many women, all of whom have had dramatic improvements in their bone structure. I would also like to say that iherb provides high quality products and service with very competitive prices.