Key Health Benefits
Vitamin D3 and K2 work in concert to support your bone health and immune function. Vitamin D3 contributes to the normal absorption and utilisation of calcium and phosphorus, while vitamin K2 contributes to the maintenance of normal bones and normal blood clotting. This formula also includes magnesium, zinc, vitamin C and vitamin B12 to support energy metabolism and overall vitality. Each capsule provides 10,000 IU of vitamin D3 and 120 mcg of vitamin K2 as MK-7, alongside a carefully selected nutrient blend.*
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Bone Strength: Vitamin D3 helps with calcium absorption, and vitamin K2 supports the incorporation of calcium into the bone matrix – together they contribute to maintaining strong bones.*
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Teeth Health: By promoting proper calcium utilisation, D3 and K2 support tooth mineralisation and enamel strength.*
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Immune Function: Vitamin D3 and zinc both contribute to the normal function of the immune system.*
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Heart Health: Vitamin K2 helps maintain arterial flexibility by activating matrix GLA protein, which discourages calcium deposits in blood vessels.*
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Energy and Vitality: Vitamin B12 and magnesium contribute to normal energy-yielding metabolism, helping to reduce tiredness and fatigue.*
Each capsule delivers a high-potency dose for those with increased needs due to limited sun exposure, ageing, or dietary restrictions.*
Understanding the Synergy: How D3 and K2 Work Together
Vitamin D3 and vitamin K2 operate through distinct yet interconnected pathways. When converted to its active form (calcitriol), vitamin D3 helps regulate calcium absorption in the intestine. Once calcium enters the bloodstream, vitamin K2 activates osteocalcin and matrix GLA protein (MGP), guiding calcium to the bones and teeth while preventing its deposition in blood vessel walls. The MK-7 form of vitamin K2 remains active in the body longer than MK-4, providing sustained support for calcium trafficking. Magnesium further aids in the activation of vitamin D, while zinc and vitamin C contribute to immune function and collagen production for bone integrity. Vitamin B12 rounds out the formula by supporting energy metabolism and nervous system health.*
The Role of Additional Nutrients
Beyond the core D3 and K2 duo, this supplement includes several complementary nutrients for comprehensive wellness. Magnesium is essential for converting vitamin D into its active form. Zinc plays a vital role in immune cell function and helps maintain healthy skin and bones. Vitamin C is a powerful antioxidant that supports collagen synthesis – a key structural protein in bones, teeth and blood vessels. Vitamin B12 contributes to normal energy metabolism and helps reduce fatigue, making this formula ideal for active lifestyles. Black pepper extract (BioPerine) is added to enhance the bioavailability of all nutrients, particularly the fat-soluble vitamins D3 and K2.*
Why Take Vitamin D3 and K2 Together?
Many people turn to vitamin D3 for its role in calcium absorption and immune function. However, taking vitamin D3 alone may not be enough to ensure calcium goes where it is needed most – your bones and teeth – rather than accumulating in soft tissues like arteries. This is where vitamin K2, specifically as menaquinone-7 (MK-7), comes into play. Together, they create a powerful synergy: D3 helps your body absorb calcium from the diet, while K2 helps direct that calcium to the skeletal system. This complementary action supports bone density, dental health and cardiovascular wellness.*
NUTRAHARMONY’s Vitamin D3 K2 supplement combines 10,000 IU of vitamin D3 (as cholecalciferol) with 120 mcg of vitamin K2 as MK-7, plus magnesium, zinc, vitamin C and vitamin B12. The inclusion of black pepper extract (BioPerine) enhances absorption, ensuring you get the most from every capsule.
What to Look For in a D3 + K2 Supplement
Not all vitamin D3 and K2 supplements are created equal. When choosing a product, consider the following:
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Dosage Ratio: A meaningful dose of D3 (10,000 IU) paired with an appropriate amount of K2 (120 mcg MK-7) ensures synergy. Too little K2 may not direct calcium adequately, while too much may be unnecessary.
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Form of Vitamin K2: MK-7 is preferred for its longer half-life, providing steady support. This formula undertake MK-7 derived from natto (fermented soya), a natural and well-studied source.
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Additional Nutrients: Magnesium, zinc, vitamin C and vitamin B12 add value by supporting multiple pathways – magnesium for vitamin D activation, zinc for immune health, vitamin C for collagen synthesis, and B12 for energy.
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Absorption Enhancers: Black pepper extract (BioPerine) improves the bioavailability of fat-soluble vitamins D3 and K2.
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Quality and Purity: Look for non-GMO, gluten-free, third-party tested products manufactured in GMP-certified facilities. This supplement meets those standards.
Frequently Asked Questions
When is the best time to take this supplement?
Since vitamins D3 and K2 are fat-soluble, take one capsule with a meal containing healthy fats (e.g., avocado, nuts, or olive oil) for optimum absorption.
Can I take this if I am on blood-thinning medications?
If you are taking anticoagulant medicines (such as warfarin), consult your health care provider before taking vitamin K2, as it may interfere with the medication’s mechanism.
Are there any side effects?
This supplement is generally well tolerated when taken as directed. High doses of vitamin D3 may cause adverse effects if taken excessively. Stick to one capsule daily and consult a health care professional if you have concerns.
Can I take this with other supplements?
Yes, but be mindful of total vitamin D intake from all sources. Excessive vitamin D can lead to toxicity. Combining with other supplements that contain calcium may also be beneficial, but consult your doctor for personalised advice.
Recommended Dosage
For adults, take one (1) capsule daily with food and water. Do not exceed the recommended dose. As with any dietary supplement, it is wise to consult a health care provider before starting a new regimen, especially if you are pregnant, nursing, have a medical condition, or are taking prescription medications.
These statements have not been evaluated by the Medicines and Healthcare products Regulatory Agency (MHRA). This product is a food supplement and should not be used as a substitute for a varied, balanced diet and a healthy lifestyle.