Vitamin D3 (Cholecalciferol)
Quick answer: Vitamin D3 (Cholecalciferol) is a vitamin ingredient. Supports bone density, immune function and mood, particularly during low-light months. Take daily with a fat-containing meal. Pair with K2 for full bone-health synergy.
- Role
- Vitamin
- Form
- Cholecalciferol in MCT oil · 2,000 IU per drop
- Citations
- 2 peer-reviewed references
Sourcing
Derived from lanolin from sustainably-shorn Australian and New Zealand sheep. Vegan-source D3 from lichen is available on request for our /ingredient/vitamin-d3 product variants.
How it works
Vitamin D3 is converted to calcitriol, which acts as a hormone regulating calcium absorption, immune-cell function, and gene expression in tissues across the body.
How to take it
Take daily with a fat-containing meal. Pair with K2 for full bone-health synergy.
Form & standardisation
Cholecalciferol in MCT oil · 2,000 IU per drop
Research
- Martineau et al. 2017 · BMJ, Meta-analysis of 25 trials showed vitamin D supplementation reduced acute respiratory infection risk, especially in deficient adults.
- Bischoff-Ferrari et al. 2009 · BMJ, Pooled analysis showed vitamin D supplementation reduced risk of falls and non-vertebral fractures in older adults.
Frequently asked questions
What is Vitamin D3?
Vitamin D3 (Cholecalciferol) is a vitamin ingredient. Supports bone density, immune function and mood, particularly during low-light months.
How does Vitamin D3 work?
Vitamin D3 is converted to calcitriol, which acts as a hormone regulating calcium absorption, immune-cell function, and gene expression in tissues across the body.
How should I take Vitamin D3?
Take daily with a fat-containing meal. Pair with K2 for full bone-health synergy.
Where is Clekina's Vitamin D3 sourced?
Derived from lanolin from sustainably-shorn Australian and New Zealand sheep. Vegan-source D3 from lichen is available on request for our /ingredient/vitamin-d3 product variants.