Selenium is in glutathione enzymes and thyroid conversion. Brazil nuts can overshoot a day’s need in one snack. A 50–100 mcg capsule is enough if your soil and diet are low — not 400 mcg “for immunity.”
Supplements
Strong evidence
Selenium
A trace mineral with a narrow useful range.
How to use
50–100 mcg with food. Skip it if you already eat Brazil nuts often.
Details
- Ingredients
- Selenomethionine
- Benefits
- Antioxidant enzymes, Thyroid cofactor
- Dosage
- 50–100 mcg
- When to take
- Morning, With food
- Side effects
- Hair/nail changes and garlic breath at high chronic doses.
- Scientific evidence
- Status matters; extra selenium in replete people has not delivered the cancer-prevention headlines of the 2000s.
- Form
- Capsule
- Third-party tested
- Yes
Editorial rating ★ 4.0
Small dose, real mineral. Toxicity is the amateur error.
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