FISH OSSEIN MINERAL COMPLEX POWDER is natural calcium source. Eklavya Biotech Pvt Ltd is the only company in India which is manufacturingFISH OSSEIN MINERAL COMPLEX and exporting at large scale. Our product is manufactured from PURIFIED FISH BONES and processed in natural process. We are not adding any preservative so it is a best raw material for your supplement. 
It has below properties- 
1- 100% natural and wild cought fish bone base.
2- Readily absorbed unlike conventional calcium source raw material.