Iron
Essential mineral for oxygen transport via hemoglobin and myoglobin. Iron deficiency is the most common nutritional deficiency worldwide, affecting approximately 2 billion people.
Known Health Benefits
Active Compounds
Ferrous sulfate, ferrous bisglycinate (gentlest), ferric iron
Potential Side Effects
Constipation, nausea, dark stools; significant toxicity risk with overdose — keep away from children
Known Drug Interactions
Reduces absorption of levothyroxine, tetracycline antibiotics, and quinolones (separate by 2–4 hours)
Evidence Classification
Supported by randomized controlled trials (RCTs), systematic reviews, or meta-analyses published in peer-reviewed journals.
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This entry is for educational purposes only. It is not medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement regimen, especially if you take medications or have health conditions.