Vitamin D3

4.7 (1.8K reviews)

In Stock

Supplement Ingredients
Ingredients	Amount Per Serving
Vitamin D3 Vitamin D	250 mcg
cholecalciferol Vitamin D	-
calcium Calcium	57 mg
calcium carbonate Calcium	-

Ingredient Research

Vitamin D
- HighIncreased 25-hydroxyvitamin D Level14 studies
- HighReduced Parathyroid Hormone Level4 studies
- ModerateImproved Insulin Sensitivity9 studies
Calcium
- LowIncreased Total Hip Bone Mineral Density3 studies
- LowReduced Stillbirth3 studies
Saccharomyces boulardii
- LowReduced Diarrhea Rate3 studies
- LowReduced Diarrhea3 studies

Research Evidence

How this product's ingredient doses compare to doses studied in research.

Calcium57 mg
Studies used 500–1,000 mg/day (median 750) across 4 studies
Below studied range
Form mismatch: this product uses Carbonate. Most research support uses Calcium Carbonate (1 study).

Gluten Free

Product Description

Promotes Bone Health: Vitamin D3 and calcium work together to enhance bone strength and support overall skeletal health.
Supports Immune Function: Vitamin D3 helps in maintaining a robust immune system, assisting your body in fighting off illnesses and infections.
Gluten-Free: Safe for individuals with gluten sensitivities or allergies, ensuring a worry-free supplement choice.
High Potency: Each tablet contains 250 mcg of Vitamin D3, providing a potent dose to meet daily health needs.
Daily Essential: Vitamin D3 is crucial for calcium absorption, which is vital for maintaining healthy teeth and muscles.
Convenient Tablet Form: Easy-to-swallow tablets make it simple to integrate into your daily health routine.
Trusted Brand: 21st Century is known for producing high-quality supplements, ensuring you get a product you can trust for your wellness journey.

For those aiming to fortify their bones, boost their immune system, and enhance their overall wellness, 21st Century Vitamin D3 offers a reliable, gluten-free solution packed with essential nutrients.