Ferritin Eisenmangel: which supplements make sense?

For low ferritin indicating iron deficiency, evidence-based supplements include oral ferrous iron (sulfate, fumarate, or bisglycinate) which are well absorbed. Vitamin C (e.g., 200 mg) co-administration enhances absorption, while calcium, tannins (tea, coffee), and phytates inhibit it. Dosing should be guided by ferritin levels and ideally prescribed after laboratory confirmation (ferritin <30 µg/L). In cases of intolerance or malabsorption, intravenous iron may be appropriate. Self-supplementation without diagnosis is dangerous: iron overload (hemochromatosis) can cause organ damage. The evidence is human-strong (guidelines, RCTs). The provided context does not contain specific information on ferritin or iron; this answer relies on general medical knowledge. Always consult a healthcare professional before starting iron therapy.