Ozo Ferro® is designed according to an ancient formula that provided for the physiological replenishment of iron in subjects with severe iron deficiency anemia. The harmonious content is identical to the constituents taken in ancient times according to popular traditions that indicated in the "apple" and in the "rust" of a nail the two ideal constituents to promote the natural absorption of iron. Phytosterols and ferrous salt are expertly mixed in the ideal proportions for an excellent therapeutic result useful as a complement to integrative therapies such as ozone therapy.