What is the recommended dosage for Iron?

General: 8-18 mg/day (RDA); Menstruating Women: 18 mg/day; Deficiency Correction: 100-200 mg elemental iron/day under medical guidance

What are the side effects of Iron?

Potential side effects include: Constipation, Nausea, Stomach pain, Black stools, Oxidative stress (excess iron).

What is iron and how may it relate to weight management?

Iron is an essential mineral required for oxygen transport and energy metabolism. Iron deficiency is associated with fatigue and reduced exercise capacity, which may indirectly affect weight management efforts. Supplementation is beneficial for those with documented iron deficiency but is not a weight loss supplement for the general population.

What dosage of iron is typically used in supplementation?

The Recommended Dietary Allowance for iron is 8 mg for adult men and 18 mg for premenopausal women. Therapeutic doses for iron deficiency typically range from 60 to 200 mg of elemental iron per day. Iron supplementation should be guided by blood tests (ferritin, serum iron, TIBC) and medical supervision.

What are the potential side effects of iron supplements?

Common side effects include constipation, nausea, abdominal pain, and dark stools. Iron overload (hemochromatosis) can cause serious organ damage. Iron supplements should only be taken when deficiency is confirmed by blood testing. Accidental iron overdose is a leading cause of poisoning in young children.

Iron
Iron

vitamin_mineral

別名: Ferrous Sulfate, Ferrous Bisglycinate, Iron Bisglycinate, Ferrous Fumarate, Carbonyl Iron

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About

An essential mineral for oxygen transport and mitochondrial energy production. Iron deficiency — affecting 15-30% of obese individuals — impairs exercise capacity and thyroid function. Supplementation should only be undertaken when deficiency is confirmed, as excess iron is pro-oxidant.

How It Works

Iron is essential for oxygen transport (hemoglobin) and mitochondrial electron transport chain (cytochrome enzymes). Iron deficiency — even without anemia — impairs aerobic capacity, reduces exercise tolerance, and decreases thyroid hormone synthesis (iron-dependent TPO enzyme), lowering metabolic rate. Correcting iron deficiency restores exercise capacity and thermogenesis.

Evidence For Conditions

症状・状態	グレード	研究数	参加者数
Post-Bariatric Nutritional Support	B	10	1000	詳細を見る →
Hypothyroid-Related Weight Gain	C	22	2000	詳細を見る →
Exercise Performance for Weight Loss	C	22	2000	詳細を見る →

Side Effects

Constipation
Nausea
Stomach pain
Black stools
Oxidative stress (excess iron)

Drug & Supplement Interactions

Levothyroxine (reduced absorption — take 4 hours apart)
Tetracycline antibiotics (reduced absorption)
Calcium supplements (reduced absorption)
Proton pump inhibitors (reduced absorption)

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Related Ingredients

B-Complex Magnesium Zinc Omega-3 Vitamin B12

基本情報

用量: General: 8-18 mg/day (RDA); Menstruating_Women: 18 mg/day; Deficiency_Correction: 100-200 mg elemental iron/day under medical guidance
剤形: capsule tablet liquid IV infusion (medical only)
天然の供給源: Red meat, Liver, Lentils, Spinach, Fortified cereals, Dark chocolate
上限量: 45 mg/day (elemental iron); excess iron increases oxidative stress
推奨摂取タイミング: On empty stomach with vitamin C for absorption; avoid with calcium, coffee, tea

エビデンスの要約

Post-Bariatric Nutritional Support B

Hypothyroid-Related Weight Gain C

Exercise Performance for Weight Loss C

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