Typical dose
1000-2000 IU daily
Oral
Oral safety: very low
About this supplement
Vitamin D (ergocalciferol) is a fat-soluble vitamin that plays a crucial role in calcium and phosphorus metabolism in the body. It is essential for maintaining healthy bones and teeth, supporting immune function, and regulating cell growth. Ergocalciferol is a form of vitamin D that is derived from yeast and fungi, and it is often used in supplements to help prevent or treat vitamin D deficiency.
How much to take
- Typical amount
- 1000-2000 IU daily
- Suggested range
- 600-800 IU daily
Potential benefits
Benefits linked to this supplement form:
Things to watch for
Possible side effects linked to this form:
Health goals
Needs and goals this form may help with:
Other forms of Vitamin D
Compare absorption and active amounts with sibling forms:
Calcifediol (25-hydroxyvitamin D3)
Used to rapidly correct vitamin D deficiency; monitor serum calcium and 25(OH)D...
Cholecalciferol (D3)
Essential for calcium absorption and bone health. Often supplemented in regions...
Vitamin D (cholecalciferol)
Vitamin D (mixed)
Vitamin D (unspecified)
Vitamin D2
Vitamin D3
Vitamin D3 in oil (softgel/liquid)
Take with a meal containing fat for optimal absorption. Store in a cool, dark pl...
Vitamin D3 powder (often on carrier)
Essential for bone health and calcium absorption. Often supplemented in regions...
Technical details â–¼
Chemical ID (CAS)
1406-16-2
Physical properties
White to off-white crystalline powder, fat-soluble, insoluble in water.
How it’s made
Ergocalciferol is produced through the ultraviolet irradiation of yeast or fungi, which converts ergosterol into vitamin D2.