Iron is a widely distributed metal in nature and is particularly important for the human body. It is retained in large quantities in the body and about 90% is reabsorbed and reused every day.
Calcium is a mineral that is not produced in the body, which is why diet is the main source of calcium and plays an important role in bone and dental health.
Vitamin B is the name for a group of eight B vitamins that are essential for the healthy functioning of the body, while vitamin B complex is a supplement containing all the B vitamins you need each day.
