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Klaire Labs SFI Health Vitamin D3 1000 IU – High Potency 25 mcg, Hypoallergenic Bone & Immune Support (100 Capsules)

Klaire Labs SFI Health Vitamin D3 1000 IU – High Potency 25 mcg, Hypoallergenic Bone & Immune Support (100 Capsules)

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Klaire Labs SFI Health Vitamin D3 1000 IU – High Potency 25 mcg, Hypoallergenic Bone & Immune Support (100 Capsules)

Regular price £25.91
Sale price £25.91 Regular price
Save % Sold out
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Vitamin D3 and Your Health

Vitamin D contributes to a number of important functions in the body, including the maintenance of normal bones and teeth, the normal function of the immune system, and the normal absorption and utilisation of calcium and phosphorus.* Yet many people don’t get enough, particularly during the darker months or if they spend most of their time indoors. Klaire Labs Vitamin D3 1000 IU provides a high-potency, hypoallergenic form of this essential nutrient in a convenient daily capsule. Each serving delivers 25 mcg (1,000 IU) of naturally derived cholecalciferol—the same form your body produces when exposed to sunlight—so it’s ready to be used straight away.

Understanding Vitamin D3 vs D2

Vitamin D comes in two main forms: D2 (ergocalciferol) from plant sources and D3 (cholecalciferol) from animal-based sources such as lanolin. Research suggests that D3 is more effective at raising and maintaining blood levels of vitamin D compared with D2. Klaire Labs uses the D3 form, which is identical to the vitamin D your body produces naturally. This ensures you receive a bio-available form that your system can utilise efficiently. For those seeking a high-quality supplement, D3 is the preferred choice.

Who Needs Vitamin D3?

Certain individuals may have a higher need for supplementary vitamin D. Those who spend most of their time indoors, live in northern latitudes, have darker skin, or are older adults often have lower vitamin D levels. Additionally, individuals following a vegan or vegetarian diet may find it challenging to get enough D3 from food alone (whilst note that this Klaire Labs product is derived from lanolin, so it’s not suitable for vegans). Always consult your health care practitioner to determine if supplementation is right for you.

Why Choose Klaire Labs Vitamin D3?

Klaire Labs has formulated this product with purity in mind. Each capsule is free from common allergens including milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans. It contains no artificial colours, flavours, or preservatives. This makes it an excellent choice for individuals with sensitivities or those seeking a clean supplement. Trusted by health care practitioners since 1969, Klaire Labs products are developed in close collaboration with physicians and are intended for uses under professional guidance.*

How to Incorporate Vitamin D3 Into Your Routine

Take one capsule daily with a meal that contains fat, as vitamin D is fat-soluble and absorption is enhanced when taken with dietary fat. The 1,000 IU (25 mcg) dosage is suitable for general maintenance for most adults, whilst individual needs may vary. Your health care practitioner can recommend the appropriate dose based on your blood levels and lifestyle. Do not exceed the recommended serving without professional advice.

Safety and Quality Considerations

Klaire Labs Vitamin D3 is manufactured to high quality standards. While vitamin D is generally safe at recommended doses, excessive intake (typically above 4,000 IU per day for extended periods) can lead to unwanted effects. If you are pregnant, nursing, taking medications, or have a medical condition, consult your doctor before uses. Store in a cool, dry place away from direct sunlight. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

*These statements have not been evaluated by EFSA. This product is not intended to diagnose, treat, , or prevent any disease.

Worldwide Delivery

Orders are prepared with clear worldwide delivery expectations from the product page through dispatch. Delivery estimates are shown before checkout where available, and tracking details are sent after the order leaves fulfilment so customers can follow the parcel and plan around the expected arrival window.

Returns and support

UK Vitality Vitamins offers straightforward post-purchase support with a clear returns process. Please check the store returns policy before sending an item back, as final eligibility may depend on product condition, packaging integrity and whether the return request is started within the stated return window.

How to choose

Use the product description, ingredient list, serving information and available variants to compare supplement options. Always check the full ingredient list, directions for use and any allergen information on the product packaging before taking any food supplement.

Ingredients and important information

Ingredient lists and formulations may vary by batch or supplier. Always check the product packaging for the most up-to-date information. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Do not exceed the recommended daily intake. If you are pregnant, nursing, taking medication or have a medical condition, consult your healthcare professional before use.

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Supplement guide

Klaire Labs SFI Health Vitamin D3 1000 IU – High Potency 25 mcg, Hypoallergenic Bone & Immune Support (100 Capsules) at UK Vitality Vitamins

Vitamin D3 and Your HealthVitamin D contributes to a number of important functions in the body, including the maintenance of normal bones and teeth, the normal function of the immune system, and the normal absorption ...

Category Vitamin D
Delivery area Worldwide
Checkout Secure checkout
Brand SFI Health
Price £25.91
Availability In stock
1000 IUBone HealthCapsulesCholecalciferolGluten-FreeHigh PotencyHypoallergenicImmune SupportKlaire LabsPractitioner Trusted

How to choose if this supplement fits your routine

Read the ingredient list, check the serving size and directions for use. Consider the supplement form (tablet, capsule, liquid) and whether it suits your dietary requirements. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.

What UK Vitality Vitamins shows before checkout

Every product page displays price, availability, variant choices, ingredient information, directions for use, allergen details, worldwide delivery expectations and secure checkout — so you can make an informed decision quickly.

Questions about Klaire Labs SFI Health Vitamin D3 1000 IU – High Potency 25 mcg, Hypoallergenic Bone & Immune Support (100 Capsules)

Is Klaire Labs SFI Health Vitamin D3 1000 IU – High Potency 25 mcg, Hypoallergenic Bone & Immune Support (100 Capsules) available with worldwide delivery?

Yes. This product is currently available on UK Vitality Vitamins with free worldwide delivery.

How should I compare this with similar supplements?

Compare the active ingredients, serving size, number of servings per container, supplement form, brand reputation and price per serving. Check allergen information if relevant to your dietary needs.

Where can I find delivery and returns information?

Delivery information is shown near the add to basket area. Returns guidance is available on the product page and full terms are covered in the store returns policy.

Supplement shopping with clarity

UK Vitality Vitamins product pages display ingredients, directions, allergen details and delivery information clearly — so you can compare supplements and make informed choices quickly.