Ferosal Adverse Reactions

Syrup, oral drops: The astringent action of iron preparations sometimes produces gastrointestinal irritation and abdominal pain with nausea and vomiting. These irritant side-effects are usually related to the amount of elemental iron taken rather than the type of preparation. Other gastrointestinal effects may include either diarrhea or constipation. Side effects may be reduced by administration with or after food (rather than on an empty stomach) or by beginning therapy with a small dose and increasing gradually. Oral liquid preparations may blacken the teeth and should be drunk through a straw. The feces of patients taking iron salts may be colored black.
Oral drops: Absorbed iron is conserved by the body, iron overload, with increased storage of iron in various tissues (hemosiderosis) may occur as a result of iron deficiency anemia and also at risk as are those with pre-existing iron storage or absorption diseases.