Vitamin D3 (cholecalciferol)
Vitamin D3 (cholecalciferol) explained
Vitamin D3 supports calcium balance, bone health, immune function, and mood; test levels to personalize dosing and avoid excess.
Not FDA ApprovedVitamin D3 (cholecalciferol) helps treat
• Vitamin D deficiency
• Bone health with calcium
• Immune function support
• Mood/seasonal support (adjunct)
additional medications
• Dietary sources and sunlight (with sun safety)
• Calcium and K2 (bone health discussion)
• Weight‑bearing exercise
medication risks
• Hypercalcemia with excessive dosing
• Interactions with thiazides/digoxin
• Kidney stones risk (with high calcium)
side effects
• Nausea
• Constipation
• Weakness (with excess)
FAQs
Q: Test levels?A: A 25‑OH vitamin D blood test guides dosing and avoids toxicity.
Q: With food?
A: Fat‑containing meals can improve absorption.
Q: Interactions?
A: Thiazide diuretics may raise calcium—monitor.
Q: Toxicity?
A: Excess can cause hypercalcemia—avoid megadoses unsupervised.
Q: FDA approval?
A: No—supplements aren’t FDA‑approved to treat disease.
