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Vitamin D-3 Powder

product on market Powder NOW Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin D3 and calcium are supported by strong evidence for maintaining bone density and supporting calcium absorption. These ingredients play a critical role in skeletal health and immune function. Research indicates a high safety profile for these nutrients when taken within recommended daily limits.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Vitamin D-3 Powder
Open Full PDF View on NIH DSLD →
Details

Label Data

0.25 tsp
Serving Size
173
Servings
Single Vitamin and Mineral
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

50 mcg (250% DV)
3.3× RDA — above typical dose (UL: 0.1 mg) 608 studies (A:16, B:251)
Calcium
120 mg (9% DV)

Other Ingredients

None
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Usage: Take 1/4 level teaspoon daily mixed in food or beverage with a fat-containing meal.

Warnings & Precautions

Caution: For adults only.

Consult physician if pregnant/nursing, taking medication, or have a medical condition.

Keep out of reach of children.

Do not eat freshness packet enclosed.

Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.

Formulation Notes

Vitamin D is normally obtained from the diet or produced by the skin from the ultraviolet energy of the sun. However, it is not abundant in food. As more people avoid sun exposure, Vitamin D supplementation becomes even more necessary to ensure that your body receives an adequate supply. NOW Vitamin D-3 Powder supplies this key vitamin along with Calcium Citrate to further support bone health.

With Calcium Citrate

Non-GMO

Triangle K

Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish ingredients.

Additional Information

Natural color variation may occur in this product.

Structural Support Helps Maintain Strong Bones

Non-GMO Triangle K

Vitamins Family owned since 1968.

This product is sold by weight not volume.

Store in a cool, dry place after opening.

GMP Quality Assured

Metadata

Product Details

UPC / SKU7 33739 00383 6
DSLD Entry Date2019-07-24
Product TypeSingle Vitamin and Mineral
FormPowder
BrandNOW
DSLD ID204842
Data Updated2026-04-11
Research

Research Evidence

872
Research Sources
53
Avg Quality
309
Meta Analysis
309
Clinical Trial
111
Rct
71
Systematic Review
55
Guideline
4
Cochrane Review
4
Regulatory Source
2
Other
2
Narrative Review
2
Observational
1
Openfda Safety
A Vitamin D and vitamin D analogues for preventing fractures associated with involutional and post-menopausal osteoporosis
Meta Analysis The Cochrane database of systematic reviews 2009 PubMed DOI
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
A Vitamin D and vitamin D analogues for preventing fractures in post-menopausal women and older men
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
A Vitamin D supplementation for prevention of cancer in adults
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
A Interventions for preventing falls in older people in care facilities and hospitals
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Drugs for preventing lung cancer in healthy people
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin D supplementation for prevention of mortality in adults
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A High prevalence of vitamin D deficiency in Asia: A systematic review and meta-analysis
Meta Analysis Critical reviews in food science and nutrition 2023 PubMed DOI
A The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2023 PubMed DOI
A Interventions for preventing falls in older people living in the community
Meta Analysis The Cochrane database of systematic reviews 2009 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.