Product guide · Food supplement
Genetic Nutrition Laboratories Vitamin D3 5000IE · 60 caps
Vitamin D3 capsules from GN Laboratories, 60 capsules. This guide sets out what the manufacturer states about the composition of Genetic Nutrition Laboratories Vitamin D3 5000IE · 60 caps, what independent research says about its main ingredient, and the safety and regulatory points that apply.
Back to the product- Named ingredients
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- Status
- Food supplement
- Evidence summaries
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Overview
Manufacturer informationGN Laboratories Vitamin D3 provides vitamin D3 (cholecalciferol) at 5000 IU, as stated in the product name, with no additives listed. This is a high-strength product: do not exceed the stated amount.
Ingredients & composition
Manufacturer information| Ingredient | Amount |
|---|---|
| Vitamin D3 (cholecalciferol) | 5000 IU |
Scientific background
Independent researchVitamin D3 (cholecalciferol)
Vitamin D is made in the skin in sunlight and is found in a few foods. It is needed for calcium absorption and bone health. EFSA set an adequate intake of 15 µg (600 IU) a day for adults2. 1 µg equals 40 IU.
Research evidence
Independent researchVitamin D3 (cholecalciferol)
Authorised EU claims include that vitamin D contributes to the maintenance of normal bones, muscle function and immune function3.
In the large VITAL trial, 2000 IU (50 µg) a day of vitamin D3 did not lower the incidence of invasive cancer or major cardiovascular events compared with placebo4. A meta-analysis found that vitamin D supplements did not prevent fractures or falls, or have clinically meaningful effects on bone density5.
Evidence limitations
Independent researchNo published study has tested this specific product; the research summarised here concerns the ingredient itself.
Safety & potential risks
For this product
The manufacturer states 5000 IU of vitamin D (as stated). That is above the upper level of 100 µg (4000 IU) a day for adults1. Intakes above the upper level are not recommended without medical advice.
- Do not exceed the recommended daily dose.
- Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
- Keep out of the reach of young children.
Vitamin D3 (cholecalciferol)
EFSA set a tolerable upper intake level of 100 µg (4000 IU) a day for adults, based on persistent hypercalciuria (excess calcium in the urine) as an early sign of excess vitamin D1. Long-term intakes above this level can raise blood calcium and harm the kidneys. High-dose products should only be used on medical advice.
Regulatory status
Sold as a food supplement. No health claims are made for this product.
Scientific references
- EFSA NDA Panel. Scientific opinion on the tolerable upper intake level for vitamin D, including the derivation of a conversion factor for calcidiol monohydrate. EFSA Journal. 2023;21:8145. DOI 10.2903/j.efsa.2023.8145
- EFSA NDA Panel. Dietary reference values for vitamin D. EFSA Journal. 2016;14:4547. DOI 10.2903/j.efsa.2016.4547
- Commission Regulation (EU) No 432/2012 establishing a list of permitted health claims made on foods. Official Journal of the European Union. Source
- Manson JE, Cook NR, Lee IM, et al. Vitamin D supplements and prevention of cancer and cardiovascular disease. N Engl J Med. 2019;380:33-44. PubMed 30415629
- Bolland MJ, Grey A, Avenell A. Effects of vitamin D supplementation on musculoskeletal health: a systematic review, meta-analysis, and trial sequential analysis. Lancet Diabetes Endocrinol. 2018;6:847-858. PubMed 30293909
- Directive 2002/46/EC on the approximation of the laws of the Member States relating to food supplements. Official Journal of the European Union. Source
Sources checked against PubMed, Crossref or the official publisher on 2026-11-04. Manufacturer information is taken from the product's own data and has not been independently tested.
The product
Genetic Nutrition Laboratories Vitamin D3 5000IE · 60 caps
€14,00 · Sold out