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Optimal D

product on market Capsule HoltraCeuticals Safety: 60/100
60/100

Review before taking

  • Vitamin D3: 1.25mg is 12.5× the Tolerable Upper Intake Level (0.1mg)
  • 100% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

Vitamin D3 is supported by strong evidence for maintaining bone health and supporting immune function. However, the low safety score suggests potential concerns regarding dosage or purity. Users should be cautious as excessive intake may lead to toxicity.

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

Alerts

Safety Alerts

Vitamin D3: 1.25mg is 12.5× the Tolerable Upper Intake Level (0.1mg)

✨ AI-generated · Qwen 3.6 · grounded in 2 sources · methodology

This product received a low safety score because it contains a dose of Vitamin D3 that is 12.5 times higher than the recommended upper limit.

Label

Product Label

Label for Optimal D
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
15
Servings
Vitamin
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

1250 mcg (6250% DV)
Exceeds UL by 12.5× (UL: 0.1 mg) 608 studies (A:16, B:251)

Other Ingredients

natural Vegetable Capsules Microcrystalline Cellulose Stearic Acid Silicon Dioxide Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: 1 capsule per week.

Warnings & Precautions

This product is a high dose vitamin D capsule that is not typically intended for long-term daily use. Please consult your health care professional if you are unsure of the appropriate dose.

If you are pregnant or nursing, consult your physician before taking this product.

As with all dietary supplements, some individuals may not tolerate or may be allergic to the ingredients used. Please read the ingredient panel carefully prior to ingestion. Cease taking this product and consult your physician if you are have negative reactions upon ingestion.

Keep out of reach of children.

This product was sealed for your protection. Do not use if outer logoed neck seal or inner-seal is missing or damaged.

Formulation Notes

Formulated to be free of allergens derived from: gluten, yeast, artificial colors and flavors.

Essential support for bone, GI and immune health

Vcaps

Additional Information

Keep container tightly closed. Store at room temperature.

Metadata

Product Details

UPC / SKU6 15033 60103 4
DSLD Entry Date2022-09-22
Product TypeVitamin
FormCapsule
BrandHoltraCeuticals
DSLD ID270203
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
View all evidence for Vitamin D →
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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.