Best Naturals Chitosan 500 mg is fundamentally a chitosan supplement, an ingredient often considered for other health purposes. While it does contain Dicalcium Phosphate, providing 200mg of calcium and 155mg of phosphorus per serving, these amounts are relatively minor in the context of typical daily requirements for bone and nail health. The main ingredient, Chitosan, takes precedence in this formulation.
Therefore, individuals specifically seeking to bolster their calcium and phosphorus intake for bone or nail support would likely find this product insufficient on its own. It's more appropriate for someone looking for chitosan's primary effects who also wants a small, incidental contribution of calcium and phosphorus. It is not formulated to be a dedicated mineral supplement for skeletal health.