Vitamin D3 – 2500 IU / 5000 IU (100 Softgels) – Jarrow Formulas

Vitamin D3 – 2500 IU / 5000 IU (100 Softgels) – Jarrow Formulas

Jarrow Formulas Vitamin D3 (Cholecalciferol) provides a high-potency source of bio-identical vitamin D3, the same form naturally produced by the skin when exposed to sunlight.
Each softgel delivers either 2500 IU (62.5 µg) or 5000 IU (125 µg) of vitamin D3 in a cold-pressed extra-virgin olive-oil base for optimal absorption.
Vitamin D3 contributes to normal immune function, muscle activity, bone and tooth maintenance, and the absorption and utilisation of calcium and phosphorus, in accordance with authorised UK / EU health claims.

Technical Features – Vitamin D3 (Cholecalciferol)

Dual-Strength Formula
Available in 2500 IU or 5000 IU potencies, allowing personalised daily support depending on lifestyle and seasonal sunlight exposure.

Superior Absorption
Delivered in softgels with extra-virgin olive oil — a natural lipid carrier that enhances bioavailability of fat-soluble vitamin D.

Immune & Bone Support
Vitamin D3 contributes to normal immune function and the maintenance of healthy bones, teeth, and muscle performance (EU Claims ID #308-310).

Natural Source
Derived from lanolin (sheep-wool origin) — identical in structure to the D3 produced by human skin.

Certified Quality
Manufactured under GMP conditions and third-party tested for purity and potency.

Composition per Softgel

Free from : Gluten, Soy, Dairy, GMOs, Artificial Colours or Preservatives.

Scientific Context – Vitamin D3 in Research

Vitamin D3 is one of the most studied micronutrients in modern nutrition science, recognised for its role in bone mineralisation, calcium balance, neuromuscular coordination, immune regulation, and cell differentiation.
Over 10 000 peer-reviewed studies explore its systemic importance for long-term wellbeing.

Investigative Research Areas

• Bone density and fracture risk in ageing populations
• Calcium absorption and homeostasis
• Immune function and seasonal defence mechanisms
• Muscle strength and performance in athletes
• Mood and vitamin D status in low-sunlight regions

For further study, search “Vitamin D3 cholecalciferol clinical trial” in PubMed or Cochrane Library.

Documented Usage Contexts

• Limited sun exposure (e.g. indoor workers or winter months)
• Adults over 50 with decreased skin synthesis
• Support for bone and teeth maintenance programmes
• Complement to calcium and magnesium supplementation

Jarrow Formulas Technical Specifications

• Format: Softgel Capsules

• Source: Natural Cholecalciferol (Vitamin D3)

• Carrier Oil: Extra Virgin Olive Oil

• Certifications: GMP Certified | Third-Party Tested | Made in USA

• Manufacturer: Jarrow Formulas Inc., Los Angeles (CA, USA)

Directions

Take 1 softgel daily with a meal containing fat, or as directed by a healthcare professional.
Suitable for adults only. Do not exceed the recommended intake.

Storage and Handling

• Store at 15–25 °C in a dry place.
• Keep away from direct sunlight and moisture.
• Do not refrigerate.
• Keep sealed and out of reach of children.

Precautions and Contraindications

Excess vitamin D intake may lead to elevated calcium levels (hypercalcaemia).
Consult your doctor if you are pregnant, breastfeeding, taking other supplements containing vitamin D, or under medical supervision.
Food supplements should not replace a balanced diet and healthy lifestyle.

FAQ – Vitamin D3 Jarrow Formulas

Is the 2500 IU or 5000 IU dose better for me?
2500 IU is ideal for maintenance during summer months, while 5000 IU is often chosen for winter or low-sunlight conditions.

Can I combine this with calcium or magnesium supplements?
Yes – vitamin D supports the normal absorption of calcium and works synergistically with magnesium.

Is this product vegan?
No, the D3 is lanolin-derived. For a vegan option, choose a Lichen-based D3 formula.

Scientific Resources

• PubMed: “Vitamin D3 cholecalciferol immune system study”
• Cochrane Library: Vitamin D meta-analyses
• ClinicalTrials.gov: Bone health and vitamin D trials

Important Disclaimer

This product is a food supplement, not a medicine.
It is not intended to diagnose, treat, cure or prevent disease.
Information provided is for educational purposes only and complies with UK and EU nutrition and health claims legislation.

Please read before purchase. The information provided regarding dietary supplements or ointments are not to be taken as medical advice.

Consult a healthcare professional prior to use if you are pregnant, nursing, taking medication, or have a medical condition.

Keep out of reach of children. Store in a cool, dry place. Do not use if seal under cap is broken or missing.

Order by 2PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on time.

There is €4.99 charge for delivery under €50 Orders. Additional charges will be imposed by our couriers for delivery to remote area, a surcharge may be levied to cover carriage to these areas.

Please note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery.