NUTRIZONE

Vitamin D3

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About Vitamin D3

Vitamin D3 (cholecalciferol) matters for bones, immunity, muscle strength and mood. Deficiency is very common in months with little sun and among people who spend most of their time indoors.

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A typical maintenance dose for adults is 1,000–2,000 IU (25–50 mcg) a day; for deficiency your doctor sets the dose (the general adult upper limit is 4,000 IU a day). Take it with a meal containing fat; it's often paired with K2.

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