WeightWorld Vitamin D3 4000 IU + K2 (MK-7) 125mcg - 240 Tablets

What Sets This Vegan D3 + K2 Supplement Apart?

Unlike most vitamin D3 products derived from sheep's wool (lanolin), this supplement uses plant-based cholecalciferol sourced from lichen—a sustainable, vegan-friendly alternative. The vitamin K2 comes in the highly bio-available MK-7 form, noted for its prolonged half-life and once-daily convenience. Each bottle contains 240 tablets—enough for eight months—and they are non-GMO, gluten-free, and free from artificial flavours or sweeteners. These tablets remain stable at room temperature, offering a clean, easy-to-store option.

Key Health Benefits

• Bone Health: By assisting calcium absorption and directing it to the skeleton, D3 and K2 help maintain strong, dense bones as you age—essential for mobility and quality of life.
• Muscle Function: Vitamin D3 contributes to normal muscle function, supporting coordination and reducing fall risk. Adequate vitamin D levels are linked to better muscle strength.
• Immune Support: Vitamin D3 helps regulate immune activity, bolstering the body’s natural defences against seasonal challenges. Combined with K2, it promotes overall wellness.
• Dental Health: By guiding calcium to teeth, K2 supports tooth mineralisation and may help keep a healthy smile. Strong teeth are built from within.
• Heart Health: Sufficient vitamin K2 supports arterial flexibility by helping prevent calcium buildup in blood vessels, encouraging healthy circulation and cardiovascular function.

Understanding the Synergy: How D3 and K2 Work Together

When you consume calcium, vitamin D3 stimulates the production of calcium-binding proteins in the intestines, boosting absorption into the bloodstream. However, absorbed calcium requires guidance. Vitamin K2 activates two key proteins: osteocalcin, which helps bind calcium to the bone matrix, and matrix GLA protein (MGP), which helps prevent calcium from depositing in blood vessel walls. Without enough K2, calcium may accumulate in arteries rather than bones. This is why a balanced D3 and K2 combination is critical for efficient calcium utilisation. The MK-7 form of K2, used in this supplement, has a longer half-life than MK-4, providing sustained activity throughout the day.

Why Take Vitamin D3 and K2 Together?

Vitamin D3 and vitamin K2 are two fat-soluble nutrients that work in tandem to support the body’s calcium metabolism. Vitamin D3 helps the intestines absorb calcium from food, while vitamin K2 activates proteins that direct calcium to bones and teeth—and away from soft tissues like arteries. This synergistic relationship means taking them together may help ensure calcium is used where it’s needed most. Many adults spend more time indoors and get less sunlight, making a daily D3 and K2 supplement a practicable choice for maintaining healthy bones, muscle function, and immune support.

Choosing a D3 + K2 Supplement

When selecting a D3 and K2 supplement, consider the dosage ratio, form of K2, and ingredient quality. This supplement provides 4000 IU (100 mcg) of vitamin D3 paired with 125 mcg of vitamin K2 as MK-7—a ratio that supports efficient calcium metabolism. MK-7 is preferred because it remains active in the body for up to 24 hours, allowing once-daily dosage. Look for third-party tested, non-GMO, and gluten-free formulae to ensure purity. Plant-based vitamin D3 sourced from lichen offers a vegan alternative to lanolin-derived D3, making it suitable for plant-based diets.

Recommended Dosage

Take one tablet daily with food, or as directed by a health care professional. Each tablet provides 4000 IU of vitamin D3 and 125 mcg of vitamin K2 (MK-7). This dosage is suitable for adults supporting bone health, muscle function, and immune wellness. Do not exceed the recommended dose. Keep out of reach of children.

Frequently Asked Questions

Are there any side effects?

Vitamin D3 and K2 are generally well tolerated when taken as directed. However, excessive vitamin D intake may lead to high calcium levels. Always adhere to the recommended dosage.

What is the best time to take D3 and K2?

Since both are fat-soluble, take them with a meal containing healthy fats to enhance absorption. Many people take them with breakfast or dinner.

Can I take D3 and K2 with other medications?

If you take blood thinners like warfarin, consult your health care provider before taking vitamin K2, as it may interfere with anticoagulation therapy. Always seek professional medical advice before starting any supplement.

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 the Medicines and Health care products Regulatory Agency (MHRA). This product is not intended to diagnose, treat, , or prevent any disease.