I have been using algaecal for about a year. My mom used it for 6 mos before her dexa (same place and machine as previous scans which. Is imp for comparison) and she improved 3%. A friend had over 10% increase over two years but is really great about her wt bearing exercises and bone friendly diet - I am not consistent. I will have another scan in a year and will see how it goes. I am looking at the use of vibration to help. If you call and mention me I get a bottle but don’t feel you hAve to. I am just happy to share the info. Best of luck to you. Lisa dedinsky