Vitamin D is a fat-soluble vitamin that also acts as a prohormone. It is involved in regulating calcium levels, bone health and normal immune system function.
For proper evaluation, we look at the form, amount per dose and actual intended use.
Vitamin D – What is it?
Vitamin D is involved in regulating calcium levels, maintaining bone health and the normal functioning of the immune system.
Where is it used?
It is found in multivitamin supplements, products for bone health and products that support the immune system.
Forms & Label
The two main forms are Vitamin D3 (cholecalciferol) and Vitamin D2 (ergocalciferol).
On the label, we examine the form, actual amount per serving and any standardization.
What do we know from the available evidence?
The appropriate dose depends on actual needs and levels in the body.
The scientific evidence varies according to the intended use, and we should not equate advertising claims with clinical data.
Safety & Precautions
Excessive intake of Vitamin D can cause toxicity and hypercalcaemia.
Pregnancy, breastfeeding, chronic conditions or medication use are reasons to seek individualized professional advice.
Frequently Asked Questions
1. Does everyone need to take it?
No. Supplementing with Vitamin D makes sense when there is a specific need or goal.
2. Does a higher dose mean a better result?
Not necessarily. The appropriate form and dose matter more.
3. How do I compare two products?
We compare the form of Vitamin D, the amount per dose, the overall composition and the number of doses in the pack.
In Brief
Vitamin D should be assessed according to its actual role, the available scientific evidence, individual needs and the appropriate dose.