In a randomized, placebo-controlled trial, 136 women who supplemented with calcium and vitamin D experienced an additional bone density benefit when they added orthosilicic acid, known as Biosil, to their supplement program.

According to the researchers:

“Combined therapy of ch-OSA [Biosil] and Calcium/Vit D3 had a potential beneficial effect on bone collagen compared to Calcium/Vit D3 alone which suggests that this treatment is of potential use in osteoporosis.”