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Vitamin D3

Fat-soluble vitamin essential for calcium absorption.

Summary

Recommended daily intake: 15 mcg. Upper limit: 100 mcg. Natural sources include Fatty fish, Egg yolks, Fortified milk.

How much Vitamin D3 should you take daily?

Recommended Daily Allowance

15 mcg

Upper Limit

100 mcg

Evidence Level 4

What are the side effects?

  • Toxicity causes hypercalcemia.
  • Risk increases above 4000 IU per day with long-term use.

Which foods contain it?

Fatty fishEgg yolksFortified milk

FAQ

What is Vitamin D3 commonly used for?
Vitamin D3 is commonly discussed in relation to Calcium absorption, Bone health, Immune modulation.
How much Vitamin D3 should adults take per day?
The current reference on this page lists an adult daily intake of 15 mcg, with an upper limit of 100 mcg.
What side effects or precautions matter for Vitamin D3?
Toxicity causes hypercalcemia., Risk increases above 4000 IU per day with long-term use. Always review medication use and total daily dose before adding a supplement.
Which foods naturally contain Vitamin D3?
Common food sources include Fatty fish, Egg yolks, Fortified milk. Food sources can be a useful baseline before deciding on long-term supplementation.
Does Vitamin D3 have an upper intake limit?
Vitamin D3 does have a listed upper limit on this page: 100 mcg. Staying far above that range over time may increase the chance of adverse effects.

Data Sources

NIH ODSTFDA DRIHealth CanadaDrugBankEFSA

Information on this page is sourced from the above official institutions and cross-verified.

This page is for nutritional science information only, not product promotion or medical advice. Consult a healthcare professional for health concerns.