Ingredient · Updated
Vitamin D3
Found in 42 productsSee all
Organic Valley Grassmilk 100% Certified Grass-Fed Reduced Fat Milk carton 
Happy Planet Creamery 2% Milk Organic Grass Fed glass bottle 
Organic Meadow Grass Fed 3.8% Organic Whole Milk plastic bottle 
Organic Valley 0% protein plus milk 
Kirkland Signature Organic Lactose-Free Reduced Fat Milk 
Horizon Organic Grassfed Whole Milk Carton 
Grace Harbor Farms Plain Kefir plastic bottle 
Nordic Naturals Ultimate Omega Fish Gelatin Softgels Lemon What is Vitamin D3?
Vitamin D3, also known as cholecalciferol, is a form of vitamin D that is synthesized by the skin when exposed to sunlight. It is also derived from lanolin (sheep's wool) or fish oil for supplement production.
It is used in foods and supplements to support bone health by aiding calcium absorption. Scientific studies suggest it may also play roles in immune function and mood regulation, though some evidence is still inconclusive regarding its effects beyond bone health.
When you see Vitamin D3 on a label, it typically indicates an effort to ensure adequate dietary vitamin D, especially in populations at risk of deficiency due to limited sun exposure.
Commonly found in: Dietary supplements, Fortified cereals, Fortified dairy products, Fortified plant milk, Fortified margarine
What to watch
- Excessive intake can lead to toxicity, characterized by elevated blood calcium levels.
Benefits
- Supports bone health by enhancing calcium absorption.
- May contribute to immune system function.
- Linked to improved mood and reduced depression in some studies.
Vitamin D3 is considered Generally Recognized As Safe (GRAS) by the FDA for use in foods.
While research supports its role in bone health, evidence is mixed regarding its effectiveness for other health benefits.
Vitamin D3 is typically animal-derived; vegans may prefer the plant-based form, Vitamin D2, or D3 sourced from lichen.
Sources: Vitamin D Fact Sheet
Scout's take
Beneficial ingredient — whole-food or functional value in this product class.
The case against
Excessive intake can lead to toxicity, but this is rare with standard dosages.
from the analysis of Nordic Naturals Ultimate Omega Fish Gelatin Softgels LemonExcessive intake can lead to hypercalcemia and associated health issues.
from the analysis of Kellogg's Corn FlakesExcessive intake can lead to hypercalcemia and kidney damage.
from the analysis of Frosted CheeriosExcessive intake may lead to vitamin D toxicity.
from the analysis of Abbott Optigro grow & gain vanilla shakeThe case for
Enhances calcium absorption and supports bone health; crucial for immune function.
from the analysis of Kemps Low-Fat Swiss Style Chocolate Milk, 1 Pint · echoed in 11 other analysesSupports calcium absorption and bone health, contributing to overall well-being.
from the analysis of Kellogg's Froot Loops · echoed in 4 other analysesSupports bone health and immune function.
from the analysis of Noka Blueberry Acai Superfood Smoothie + Brain Support Pouches · echoed in 2 other analysesEssential for calcium absorption and bone health, supporting immune function.
from the analysis of Fairlife CHOCOLATE 2% REDUCED FAT ULTRA-FILTERED MILKMore from Scout's analyses
Vitamin D3 is essential for calcium absorption and bone health. It is often added to dairy products to enhance their nutritional profile. Adequate vitamin D levels support immune function and bone strength.
from the analysis of Fairlife CHOCOLATE HIGH PROTEIN MILK SHAKE5,000 IU per 2 mL; supports calcium absorption, bone and immune health.
from the analysis of Optimize Vitaminz D3, K2, A, E Liquid DropsVitamin D3 is added to milk to enhance its nutritional value, supporting bone health and immune function. It is a fat-soluble vitamin that helps in the absorption of calcium and phosphorus. Fortification with vitamin D3 is common in dairy products to prevent deficiencies.
from the analysis of Organic Meadow Grass Fed 3.8% Organic Whole Milk plastic bottleAll 42 products with Vitamin D3
+ 18 more products in the Scout app
Where Vitamin D3 shows up
- Milk 12 products
- Yogurt 10 products
- Protein Powders 4 products
- Cereal 4 products
- Kefir 2 products
- Multivitamins 2 products
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