Iron

Fe 🟢 Strong

Essential for oxygen transport in red cells; especially important for menstruating and pregnant women.

⚠ Excess if not deficientSee cautions below; consult your physician for specifics.

Reviewed by Dr. Sungwoong Jung · Last reviewed Jul 16, 2026

Key benefits

Hemoglobin → oxygen transport

Myoglobin, muscle O₂

Energy-metabolism enzymes

How it works

Evidence

🟢 StrongStrong for correcting iron-deficiency anemia

🟡 Moderate / mixedNo benefit and risk if not deficient

The same nutrient can differ for "correcting deficiency" vs "general prevention."

Suggested use

Vitamin C aids uptake; better fasting but take with food if needed.

A general suggestion, not a prescription.

Cautions & interactions

Overload risk; blocks thyroid meds/antibiotics. Confirm deficiency first.

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Korea vs USA

🇰🇷 Korea

Iron supplements · women/pregnancy

🇺🇸 USA

ferrous/bisglycinate forms

References

NIH ODS — Iron ↗

Grades/refs re-verified at each update (draft).

Vitamin C Vitamin C An essential water-soluble vitamin for antioxidant defense, collagen synthesis, and iron uptake. 🟢 Strong Foundational Folate Folate Essential for cell division and blood formation; key for preventing neural-tube defects around pregnancy. 🟢 Strong Women Vitamin B12 Vitamin B12 Essential for blood and nerve function; deficiency common in vegans, elderly, and after GI surgery. 🟢 Strong Energy·Cell

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🇰🇷 Buy in Korea 🇺🇸 Buy in USA

Disclaimer — This content is for general information and suggestion only and does not replace medical diagnosis or treatment. Consult a doctor or pharmacist if you have a condition or take medication.