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Swanson

Thyroid Essentials

1 Capsule × 2/day · 90 servings

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What it does

A combination of 14 label ingredients.

Selenium

selenomethioninePremium

Supports normal thyroid hormone metabolism and enzymes that protect cells from oxidative damage.

Magnesium

magnesium oxideBudget

magnesium oxide: Supports normal muscle function; small studies found oxide less well absorbed than citrate, with possible laxative effects.

HormonesGeneral HealthEnergy
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Ingredients (15)

IngredientDoseTarget/referenceForm

Other ingredients

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

Lab testing

How to take it

With food
Keep it away from protein-heavy meals
Space it a couple of hours from Iron and Calcium
Split into 2 doses across the day

On the label

As a dietary supplement, take one capsule two times per day with food and water.

Price check

$10.59

$0.12 / serving

$10$20$50

Cheaper than 99% of 49 hormones supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

Not medical advice. Consult your healthcare professional.

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