Aqueous medium having a pH between 4.8 and 6.8 and comprising the Fell- ascorbate-proteinate complex, prepared according to one of the following two alternative methods: (1) by dissolving in aqueous medium a solid oral composition (A) comprising an organic or inorganic ferrous salt, vitamin E, sodium ascorbate, plant or animal proteins and magnesium oxide in combination with suitable excipients and/or diluents, or (2) by forming a liquid oral composition (B) comprising the same components of the formulation (A) in combination with suitable excipients and/or diluents and water. Both the solid composition (A) in the method (1) and the liquid composition (B) in the method (2) are oral and are intended for the treatment of disorders and diseases caused by iron deficiency. A further object of the present invention relates to the preparation processes of the aforesaid solid composition (A) and liquid composition (B).
