The iron content of Spirulina powder is remarkable: Because it comes form a natural source it is possibly one of the easiest to absorb and assimilate iron rich food.
Some studies suggest that the iron found in Spirulina is absorbed 60% more efficiently than from conventional iron supplements.
Iron is essential to build a strong system, and yet iron deficiency is the most common mineral deficiency.
Spirulina contains 32 mg of iron per 100 g (177% of the RDA), a tablespoon of 10 g Spirulina contains 3,2 mg of iron, 18% of the RDA. If you are looking to increase your iron intake even more, due to anemia, go for Chlorella.