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Iron

Iron is a chemical element with symbol Fe (from Latin: ferrum) and atomic number 26. It is a metal in the first transition series. It is by mass the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most common element in the Earth's crust. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars, where it is the last element to be produced with release of energy before the violent collapse of a supernova, which scatters the iron into space.

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when taking iron as a supplement, taking it with vitamin C will increase the amount that is absorbed. In contrast, calcium products lead to poor iron absorption when taken at the same time as iron supplements. Slow release iron, such as carbonyl feosol iron, may be better absorbed than ferrous sulfate.

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