Sodium Selenate

Sodium Selenate is a tier 2 form of Selenium, used in 657 on-market products and providing 21.4% elemental selenium by weight.

Basis: Na2SeO4 x 10H2O, decahydrate (described as the common supplement ingredient form vs 0.418 anhydrous -- spot-check against labels)

Why this tier: Inorganic selenate is well absorbed but, like selenite, less well retained in tissue than organic selenomethionine per general bioavailability literature.

Source: uncertain -- needs review for a direct comparative citation

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