Nature's Best

Vitamin D3 1000iu

Vitamin D3 1000iu - Main image
$6.07 $19.9 In stock

High-Strength Vitamin D3 1000iu Capsules for Premium Bioavailable Support: Our high-strength Vitamin D3 1000iu supplement provides daily nutritional insurance to safeguard your health. Formulated with the highly bioavailable cholecalciferol (D3) form, these capsules are suspended in natural sunflower seed oil to maximise nutrient absorption.

Unlike standard tablets, our oil-based capsules ensure optimal delivery of fat-soluble vitamin D. Every batch is manufactured and packaged in the UK under strict Good Manufacturing Practice (GMP) quality standards.

Key Health Benefits & Functions

The following health claims are authorised under EU Regulation No 432/2012 and are supported by the European Food Safety Authority (EFSA).

Vitamin D3 contributes to:

Bone & Teeth Health:

  • Contributes to the maintenance of normal bones
  • Contributes to the maintenance of normal teeth
  • Contributes to normal absorption/utilisation of calcium and phosphorus

Immune System Support:

  • Contributes to the normal function of the immune system.

Muscle & Cellular Function:

  • Contributes to the maintenance of normal muscle function and has a role in the process of cell division

Specifications & Dietary Information

Feature Details
Level/Strength 1000iu Vitamin D3 (Cholecalciferol)
Format Liquid-filled gelatin capsules (suspended in sunflower seed oil for enhanced absorption)
Manufacturing Made in the UK in GMP-certified facilities
Dietary Suitability Contains gelatin. Not suitable for vegetarians or vegans. For a 100% plant-based option, see our Vegan Vitamin D3 1000iu.

Who Needs Vitamin D3 1000iu?

UK Government advice is that everyone should consider taking 10mcg (400iu) of vitamin D daily for healthy bones and muscles. This is particularly important during the winter months.

NHS Inform states that certain groups are at increased risk of vitamin D deficiency and should take a daily 10mcg (400iu) vitamin D supplement all year. These groups include:

  • All pregnant and breastfeeding women.
  • Infants and children under 5 years old (unless consuming over 500ml of infant formula daily).
  • Individuals with low or no sun exposure, such as:
    • Those who cover their skin for cultural reasons.
    • People who are housebound or stay indoors for long periods.
    • Residents of care homes.
  • People from minority ethnic groups with dark skin (e.g., African, African-Caribbean, South Asian origin), as they require more sun exposure to produce the same amount of vitamin D.

To understand the health implications of low vitamin D3 levels, read our comprehensive Vitamin D Guide.

Our product range includes a full spectrum of vitamin D supplements, from low-dose vitamin D to high-strength vitamin D. We also feature synergistic vitamin D and K supplements. Review our comprehensive vitamin D offerings.

Expert Support
Have questions about your nutritional needs? Get free, confidential advice from our expert Nutrition Advisors.

Ready to check out

Review the selected option and total at checkout.

Delivery to you

Allow time for the store to prepare your order before transit begins.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
Talking through a refund

Send the store your order number and the reason for your request.

Please contact us for the refund processing timeframe before returning an item.

View policy
Your shipping options

Choose from the delivery options available for your address.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Before you return a product

Check the conditions for your product before sending it back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (5.0 / 5 · 2 reviews)

Edward ★★★★★

I've been taking these softgels for a few weeks now and I already feel more energized in the mornings. The 1000iu dosage seems just right for me, and they don't leave any aftertaste.

Amelia ★★★★★

The capsules are tiny and easy to swallow, which makes taking them daily a no-brainer. Since I started these 1000iu softgels, I've noticed I'm not feeling as sluggish during the darker months, and the bioavailable formula gives me peace of mind. Just the right dosage for everyday support.