Vitamin D3 (cholecalciferol) is a fat-soluble vitamin essential for calcium absorption, immune function, and bone health.

Dosage Information

Benefits

Supports bone health, immune system function, mood regulation, and may reduce risk of certain diseases.

Side Effects

Rare at recommended doses. High doses may cause hypercalcemia, nausea, and kidney problems.

Interactions

May interact with certain medications including steroids, weight loss drugs, and cholesterol-lowering medications.

Food Sources

Fatty fish, egg yolks, fortified foods, and sunlight exposure (not technically a food source).

Usage Instructions

Take with a meal containing fat for optimal absorption. Best taken in the morning or afternoon.