*NRV: Nutrient Reference Values according to (EU) No. 1169/2011. See product label for full information.
Vegan D3 · 50µgCholecalciferol from plant sources, active form, 1000% NRV per capsule.
K2 MK-7 · 50µgMenaquinone-7, the form of Vitamin K2 with the longest duration of action.
Why D3 and K2 together
Calcium absorbed without direction becomes a risk. K2 solves that.
Vitamin D3 increases calcium absorption from the intestine by up to 40% compared to its absence. But the absorbed calcium must be directed towards bones and teeth, not deposited in blood vessel walls or soft tissues.
Vitamin K2 in MK-7 form activates two critical proteins: osteocalcin, which fixes calcium into the bone matrix, and Matrix Gla Protein (MGP), which prevents arterial calcification. Without K2, vitamin D does only half its job. Together, they create a complete calcium utilisation circuit.
What each ingredient delivers
Vitamin D3 · 50µg (2000 IU) — vegan cholecalciferol, covering 1000% of the NRV. The standard dose recommended in scientific literature for maintaining adequate levels in adults. Vegan source, not from animal lanolin.
Vitamin K2 · 50µg MK-7 — menaquinone-7, the form with a half-life of approximately 72 hours, providing constant biological activity throughout the entire day from a single capsule. 67% NRV per serving.
The two active ingredients
D3 and K2 — two vitamins, one complete circuit.
Vitamin D3 · 50µg (2000 IU)
Vegan cholecalciferol · 1000% NRV
The active form of vitamin D, essential for calcium and phosphorus absorption, immune function, bone and muscle health, and maintaining normal calcium levels in the blood. Our source is vegan, unlike the animal lanolin used in many conventional products.
Vitamin K2 MK-7 · 50µg
Menaquinone-7 · 67% NRV
The MK-7 form has the longest half-life of all K2 forms (approx. 72 hours), providing constant biological activity from a single daily capsule. It activates osteocalcin for calcium fixation in bones and MGP protein for vascular protection.
What the D3 + K2 formula supports
Bone health, immunity and vascular protection, in one capsule.
What Vitamin D3 supports
Normal absorption and utilisation of calcium and phosphorus
Maintenance of normal blood calcium levels
Maintenance of normal bone health
Maintenance of normal muscle function
Normal functioning of the immune system
Normal cell division process
EFSA-approved claims under Reg. (EC) No. 1924/2006.
What Vitamin K2 supports
Maintenance of normal bone health
Normal blood coagulation
Activation of osteocalcin for calcium fixation in bones
Activation of MGP protein for vascular protection
Direction of absorbed calcium towards bones, not arteries
EFSA-approved claims under Reg. (EC) No. 1924/2006.
Who it's for
Vitamin D deficiency affects over 40% of the European population. Probably including you.
People with limited sun exposure
Cold seasons, office work, and covering clothing all limit the skin's synthesis of vitamin D. Supplementation is the only way to maintain adequate levels during autumn and winter months.
People over 40
The skin's capacity to synthesise vitamin D declines with age. Calcium absorption also decreases, and the risk of osteoporosis increases. D3 + K2 addresses both issues simultaneously with a single daily supplement.
Athletes and active individuals
Vitamin D supports normal muscle function and recovery. K2 ensures that minerals from a protein-rich diet are directed towards bones rather than soft tissues or joints.
Why D3 + K2 together
Vitamin D3 alone versus D3 + K2
Most products offer only D3. But without K2, the absorbed calcium has no direction. This is the difference between a complete formula and an incomplete one.
K2 MK-7, the form with maximum bioavailability and duration
Vascular protection through MGP protein activation
Cholecalciferol from vegan source, not animal lanolin
Vegan HPMC capsule, gluten free, lactose free
Vitamin D3 alone (standard formula)
Incomplete formula
Increases calcium absorption without directing it
Without K2, risk of vascular calcification at higher doses
Without osteocalcin activation for bone fixation
Does not address vascular protection
Frequently from animal lanolin, unspecified on the label
Incomplete calcium metabolisation circuit
The science behind it
What the scientific literature says about the D3 + K2 formula
The synergy between vitamin D3 and K2 is documented in clinical studies published in indexed journals. Not marketing — confirmed biological mechanisms.
40%increase in intestinal calcium absorption in the presence of vitamin D3 compared to its absenceJournal of Bone and Mineral Research, 2011
72hhalf-life of MK-7 (menaquinone-7), providing constant biological activity from a single daily capsuleBlood Coagulation and Fibrinolysis, 2007
+25%greater bone mineral density with D3 + K2 combination versus D3 alone in comparative clinical studiesOsteoporosis International, 2013
Studies and documented mechanisms
1
Vitamin D3 and calcium absorption · confirmed intestinal mechanismStudies by Heaney et al. (2003) demonstrated that vitamin D3 (cholecalciferol) increases the expression of calcium transport proteins at the intestinal mucosa level, particularly calbindin D9k and calbindin D28k. The effect is proportional to the dose and to serum 25(OH)D levels, with optimal absorption at serum levels of 75 to 100 nmol/L.PubMed 14632730
2
Vitamin K2 MK-7 and bone density · randomised clinical trialA randomised double-blind study (Knapen et al., 2013) on 244 post-menopausal women demonstrated that MK-7 supplementation (180 µg per day) over 3 years significantly improved bone mineral content and bone density at the lumbar spine and femoral neck compared to placebo, with a concurrent reduction in arterial stiffness.PubMed 23525894
3
MGP protein and vascular calcification · the K2 mechanism documentedMatrix Gla Protein (MGP) is the most potent known natural inhibitor of vascular calcification. It requires activation by vitamin K2 to become functional. Studies by Schurgers et al. (2007) confirmed that MK-7 has significantly greater bioavailability than MK-4 and a half-life of approximately 72 hours, making it the optimal form for keeping MGP continuously active.PubMed 17100584
4
D3 + K2 synergy · superior effects of combination versus monotherapyA meta-analysis (van Ballegooijen et al., 2017) examined the interaction between vitamin D and vitamin K in calcium metabolism and cardiovascular health. The data suggested that vitamin D increases the expression of vitamin K-dependent proteins (including osteocalcin and MGP), intensifying the simultaneous need for K2 to activate them and maximising bone and vascular benefits.PubMed 28566085
5
Vitamin D deficiency in Europe · documented prevalenceA pan-European study (Cashman et al., 2016) published in the American Journal of Clinical Nutrition analysed serum 25(OH)D levels across 13 European countries and found that over 40% of the adult population presents insufficient levels (below 50 nmol/L), with high prevalence during autumn and winter months, especially among people with limited sun exposure.PubMed 26676070
How to use
How to use Vitamin D3 + K2
The recommended daily dose is 1 capsule, taken with a large glass of water. Vitamin D3 is fat-soluble — absorption is optimal when the capsule is taken during or after a meal containing fat.
Daily dose: 1 capsule
How to take: with a large glass of water
Optimal timing: during or after a meal containing fat
Duration: 60 servings per container, 2 months of continuous support
When it is recommended
Year-round, especially during autumn and winter
For people with limited sun exposure (office work, northern climates)
As support for bone and muscle health
In combination with calcium supplements, for optimal utilisation
As immune support during high-risk seasons
Do not exceed the recommended daily dose. Not recommended for children, pregnant or breastfeeding women. Keep out of reach of children. People taking anticoagulants (warfarin, acenocoumarol) should consult a doctor before use, as vitamin K2 may interact with these medications.
FAQ Vitamin D3 + K2
Frequently asked questions about GENIUS NUTRITION® Vitamin D3 + K2
Why is vitamin K2 important alongside D3?
Vitamin D3 increases calcium absorption, but does not control where it ends up in the body. Vitamin K2 activates two key proteins: osteocalcin (which incorporates calcium into bone) and Matrix Gla Protein (which prevents calcium deposition in arterial walls). Without K2, calcium absorbed through the action of D3 can reach unintended destinations, including the arteries.
What is MK-7 and why is it superior to MK-4?
MK-7 (menaquinone-7) and MK-4 are two forms of vitamin K2. MK-7 has a half-life of approximately 72 hours, unlike MK-4 which is eliminated within a few hours. A single MK-7 capsule per day provides constant biological activity throughout the entire day, without sudden peaks and drops in serum concentration.
Is the cholecalciferol in the formula vegan?
Yes. The Vitamin D3 in GENIUS NUTRITION® Vitamin D3 + K2 is vegan cholecalciferol, obtained from plant sources (lichen), not from sheep lanolin which is the standard source in many conventional products. The HPMC capsule is also 100% vegan, with no animal gelatin.
When is the best time to take this capsule?
Vitamin D3 is fat-soluble and absorbs significantly better in the presence of dietary fat. The recommendation is to take the capsule during the main meal or immediately after a meal containing fat (olive oil, avocado, eggs, dairy). Avoid taking it on an empty stomach.
Is 2000 IU enough or do I need more?
The dose of 2000 IU (50 µg) is considered a safe and effective daily supplementation level for maintaining adequate vitamin D levels in adults. People with severe deficiency confirmed through blood tests may require higher doses under medical supervision. The upper safety limit established by EFSA is 4000 IU per day for adults.
Can it interact with medications?
Vitamin K2 can interact with anticoagulant medications (warfarin, acenocoumarol, Sintrom). If you are on such treatment, consult your doctor before use. Vitamin D3 at standard doses has no significant known drug interactions, but people with kidney conditions or hypercalcaemia should consult a doctor.
Can I take D3 + K2 long-term?
Yes. D3 + K2 supplementation is recommended long-term, especially during months with reduced sun exposure. The dose of 2000 IU D3 per day falls comfortably below the upper safety limit established by EFSA. Periodic monitoring of serum 25(OH)D levels through blood tests is recommended, ideally once a year.
Scientific references
Heaney RP et al. (2003). Human serum 25-hydroxycholecalciferol response to extended oral dosing with cholecalciferol. American Journal of Clinical Nutrition. PMID 14632730
Knapen MHJ et al. (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporosis International. PMID 23525894
Schurgers LJ et al. (2007). Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. PMID 17100584
van Ballegooijen AJ et al. (2017). The synergistic interplay between vitamins D and K for bone and cardiovascular health: a narrative review. International Journal of Endocrinology. PMID 28566085
Cashman KD et al. (2016). Vitamin D deficiency in Europe: pandemic? American Journal of Clinical Nutrition. PMID 26676070
Holick MF. (2007). Vitamin D deficiency. New England Journal of Medicine. PMID 17634462
Bone and immune health
Vitamin D3 + K2 Calcium where it belongs, not anywhere.
50µg vegan D3 (2000 IU) + 50µg K2 MK-7 per capsule. 1000% NRV Vitamin D. Vegan HPMC capsule. 60 days of support for bone health, immune function and vascular protection.
*NRV: Daily nutrient reference values (EU) Nr. 1169/2011.
Bulking agent (microcrystalline cellulose), maltodextrin (from corn), capsule shell (hydroxypropyl methylcellulose), vitamin D3 (vegan cholecalciferol), anti-caking agents (magnesium salts of vegetable fatty acids, silicon dioxide), vitamin K2 (menaquinone-7). May contain traces of eggs, soy, milk and oats.
Food supplement. Store in a cool, dry place, protected from direct sunlight and freezing. Recommended daily dose: 1 capsule with a large glass of water. Do not exceed the recommended daily dose. Not recommended for children, pregnant or breastfeeding women. Keep out of reach of children. Not recommended for individuals taking anticoagulant medication. Individuals with gastric conditions should consult a physician before use. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
Servings: 60
Serving: 1 capsule
Net weight: 50.7g
Key benefits
Complete digestion of proteins, carbs, fats and fibre from a single capsule
Less bloating and discomfort after heavy meals
Real support for lactose digestion, with a double dose of lactase
5 active enzymes working together across the full macronutrient spectrum
Patented, clinically tested DigeZyme® blend
Nattokinase for circulatory support, beyond digestion
Ideal for protein-dense or dairy-heavy meals
100% vegan capsule, no animal gelatin
Gluten free, lactose free
Description
High-Purity · Premium Grade Vitamins
VITAMIN D3 + K2 A complete formula means not just absorption, but direction. D3 and K2, in one capsule.
50 µg Vitamin D3 (vegan cholecalciferol) and 50 µg Vitamin K2 (menaquinone-7, MK-7) per capsule. 1000% NRV Vitamin D. Clean formula, vegan HPMC capsule, 60 servings per container.
*NRV: Nutrient Reference Values according to (EU) No. 1169/2011. See product label for full information.
Vegan D3 · 50µgCholecalciferol from plant sources, active form, 1000% NRV per capsule.
K2 MK-7 · 50µgMenaquinone-7, the form of Vitamin K2 with the longest duration of action.
Why D3 and K2 together
Calcium absorbed without direction becomes a risk. K2 solves that.
Vitamin D3 increases calcium absorption from the intestine by up to 40% compared to its absence. But the absorbed calcium must be directed towards bones and teeth, not deposited in blood vessel walls or soft tissues.
Vitamin K2 in MK-7 form activates two critical proteins: osteocalcin, which fixes calcium into the bone matrix, and Matrix Gla Protein (MGP), which prevents arterial calcification. Without K2, vitamin D does only half its job. Together, they create a complete calcium utilisation circuit.
What each ingredient delivers
Vitamin D3 · 50µg (2000 IU) — vegan cholecalciferol, covering 1000% of the NRV. The standard dose recommended in scientific literature for maintaining adequate levels in adults. Vegan source, not from animal lanolin.
Vitamin K2 · 50µg MK-7 — menaquinone-7, the form with a half-life of approximately 72 hours, providing constant biological activity throughout the entire day from a single capsule. 67% NRV per serving.
The two active ingredients
D3 and K2 — two vitamins, one complete circuit.
Vitamin D3 · 50µg (2000 IU)
Vegan cholecalciferol · 1000% NRV
The active form of vitamin D, essential for calcium and phosphorus absorption, immune function, bone and muscle health, and maintaining normal calcium levels in the blood. Our source is vegan, unlike the animal lanolin used in many conventional products.
Vitamin K2 MK-7 · 50µg
Menaquinone-7 · 67% NRV
The MK-7 form has the longest half-life of all K2 forms (approx. 72 hours), providing constant biological activity from a single daily capsule. It activates osteocalcin for calcium fixation in bones and MGP protein for vascular protection.
What the D3 + K2 formula supports
Bone health, immunity and vascular protection, in one capsule.
What Vitamin D3 supports
Normal absorption and utilisation of calcium and phosphorus
Maintenance of normal blood calcium levels
Maintenance of normal bone health
Maintenance of normal muscle function
Normal functioning of the immune system
Normal cell division process
EFSA-approved claims under Reg. (EC) No. 1924/2006.
What Vitamin K2 supports
Maintenance of normal bone health
Normal blood coagulation
Activation of osteocalcin for calcium fixation in bones
Activation of MGP protein for vascular protection
Direction of absorbed calcium towards bones, not arteries
EFSA-approved claims under Reg. (EC) No. 1924/2006.
Who it's for
Vitamin D deficiency affects over 40% of the European population. Probably including you.
People with limited sun exposure
Cold seasons, office work, and covering clothing all limit the skin's synthesis of vitamin D. Supplementation is the only way to maintain adequate levels during autumn and winter months.
People over 40
The skin's capacity to synthesise vitamin D declines with age. Calcium absorption also decreases, and the risk of osteoporosis increases. D3 + K2 addresses both issues simultaneously with a single daily supplement.
Athletes and active individuals
Vitamin D supports normal muscle function and recovery. K2 ensures that minerals from a protein-rich diet are directed towards bones rather than soft tissues or joints.
Why D3 + K2 together
Vitamin D3 alone versus D3 + K2
Most products offer only D3. But without K2, the absorbed calcium has no direction. This is the difference between a complete formula and an incomplete one.
K2 MK-7, the form with maximum bioavailability and duration
Vascular protection through MGP protein activation
Cholecalciferol from vegan source, not animal lanolin
Vegan HPMC capsule, gluten free, lactose free
Vitamin D3 alone (standard formula)
Incomplete formula
Increases calcium absorption without directing it
Without K2, risk of vascular calcification at higher doses
Without osteocalcin activation for bone fixation
Does not address vascular protection
Frequently from animal lanolin, unspecified on the label
Incomplete calcium metabolisation circuit
The science behind it
What the scientific literature says about the D3 + K2 formula
The synergy between vitamin D3 and K2 is documented in clinical studies published in indexed journals. Not marketing — confirmed biological mechanisms.
40%increase in intestinal calcium absorption in the presence of vitamin D3 compared to its absenceJournal of Bone and Mineral Research, 2011
72hhalf-life of MK-7 (menaquinone-7), providing constant biological activity from a single daily capsuleBlood Coagulation and Fibrinolysis, 2007
+25%greater bone mineral density with D3 + K2 combination versus D3 alone in comparative clinical studiesOsteoporosis International, 2013
Studies and documented mechanisms
1
Vitamin D3 and calcium absorption · confirmed intestinal mechanismStudies by Heaney et al. (2003) demonstrated that vitamin D3 (cholecalciferol) increases the expression of calcium transport proteins at the intestinal mucosa level, particularly calbindin D9k and calbindin D28k. The effect is proportional to the dose and to serum 25(OH)D levels, with optimal absorption at serum levels of 75 to 100 nmol/L.PubMed 14632730
2
Vitamin K2 MK-7 and bone density · randomised clinical trialA randomised double-blind study (Knapen et al., 2013) on 244 post-menopausal women demonstrated that MK-7 supplementation (180 µg per day) over 3 years significantly improved bone mineral content and bone density at the lumbar spine and femoral neck compared to placebo, with a concurrent reduction in arterial stiffness.PubMed 23525894
3
MGP protein and vascular calcification · the K2 mechanism documentedMatrix Gla Protein (MGP) is the most potent known natural inhibitor of vascular calcification. It requires activation by vitamin K2 to become functional. Studies by Schurgers et al. (2007) confirmed that MK-7 has significantly greater bioavailability than MK-4 and a half-life of approximately 72 hours, making it the optimal form for keeping MGP continuously active.PubMed 17100584
4
D3 + K2 synergy · superior effects of combination versus monotherapyA meta-analysis (van Ballegooijen et al., 2017) examined the interaction between vitamin D and vitamin K in calcium metabolism and cardiovascular health. The data suggested that vitamin D increases the expression of vitamin K-dependent proteins (including osteocalcin and MGP), intensifying the simultaneous need for K2 to activate them and maximising bone and vascular benefits.PubMed 28566085
5
Vitamin D deficiency in Europe · documented prevalenceA pan-European study (Cashman et al., 2016) published in the American Journal of Clinical Nutrition analysed serum 25(OH)D levels across 13 European countries and found that over 40% of the adult population presents insufficient levels (below 50 nmol/L), with high prevalence during autumn and winter months, especially among people with limited sun exposure.PubMed 26676070
How to use
How to use Vitamin D3 + K2
The recommended daily dose is 1 capsule, taken with a large glass of water. Vitamin D3 is fat-soluble — absorption is optimal when the capsule is taken during or after a meal containing fat.
Daily dose: 1 capsule
How to take: with a large glass of water
Optimal timing: during or after a meal containing fat
Duration: 60 servings per container, 2 months of continuous support
When it is recommended
Year-round, especially during autumn and winter
For people with limited sun exposure (office work, northern climates)
As support for bone and muscle health
In combination with calcium supplements, for optimal utilisation
As immune support during high-risk seasons
Do not exceed the recommended daily dose. Not recommended for children, pregnant or breastfeeding women. Keep out of reach of children. People taking anticoagulants (warfarin, acenocoumarol) should consult a doctor before use, as vitamin K2 may interact with these medications.
FAQ Vitamin D3 + K2
Frequently asked questions about GENIUS NUTRITION® Vitamin D3 + K2
Why is vitamin K2 important alongside D3?
Vitamin D3 increases calcium absorption, but does not control where it ends up in the body. Vitamin K2 activates two key proteins: osteocalcin (which incorporates calcium into bone) and Matrix Gla Protein (which prevents calcium deposition in arterial walls). Without K2, calcium absorbed through the action of D3 can reach unintended destinations, including the arteries.
What is MK-7 and why is it superior to MK-4?
MK-7 (menaquinone-7) and MK-4 are two forms of vitamin K2. MK-7 has a half-life of approximately 72 hours, unlike MK-4 which is eliminated within a few hours. A single MK-7 capsule per day provides constant biological activity throughout the entire day, without sudden peaks and drops in serum concentration.
Is the cholecalciferol in the formula vegan?
Yes. The Vitamin D3 in GENIUS NUTRITION® Vitamin D3 + K2 is vegan cholecalciferol, obtained from plant sources (lichen), not from sheep lanolin which is the standard source in many conventional products. The HPMC capsule is also 100% vegan, with no animal gelatin.
When is the best time to take this capsule?
Vitamin D3 is fat-soluble and absorbs significantly better in the presence of dietary fat. The recommendation is to take the capsule during the main meal or immediately after a meal containing fat (olive oil, avocado, eggs, dairy). Avoid taking it on an empty stomach.
Is 2000 IU enough or do I need more?
The dose of 2000 IU (50 µg) is considered a safe and effective daily supplementation level for maintaining adequate vitamin D levels in adults. People with severe deficiency confirmed through blood tests may require higher doses under medical supervision. The upper safety limit established by EFSA is 4000 IU per day for adults.
Can it interact with medications?
Vitamin K2 can interact with anticoagulant medications (warfarin, acenocoumarol, Sintrom). If you are on such treatment, consult your doctor before use. Vitamin D3 at standard doses has no significant known drug interactions, but people with kidney conditions or hypercalcaemia should consult a doctor.
Can I take D3 + K2 long-term?
Yes. D3 + K2 supplementation is recommended long-term, especially during months with reduced sun exposure. The dose of 2000 IU D3 per day falls comfortably below the upper safety limit established by EFSA. Periodic monitoring of serum 25(OH)D levels through blood tests is recommended, ideally once a year.
Scientific references
Heaney RP et al. (2003). Human serum 25-hydroxycholecalciferol response to extended oral dosing with cholecalciferol. American Journal of Clinical Nutrition. PMID 14632730
Knapen MHJ et al. (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporosis International. PMID 23525894
Schurgers LJ et al. (2007). Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. PMID 17100584
van Ballegooijen AJ et al. (2017). The synergistic interplay between vitamins D and K for bone and cardiovascular health: a narrative review. International Journal of Endocrinology. PMID 28566085
Cashman KD et al. (2016). Vitamin D deficiency in Europe: pandemic? American Journal of Clinical Nutrition. PMID 26676070
Holick MF. (2007). Vitamin D deficiency. New England Journal of Medicine. PMID 17634462
Bone and immune health
Vitamin D3 + K2 Calcium where it belongs, not anywhere.
50µg vegan D3 (2000 IU) + 50µg K2 MK-7 per capsule. 1000% NRV Vitamin D. Vegan HPMC capsule. 60 days of support for bone health, immune function and vascular protection.
*NRV: Daily nutrient reference values (EU) Nr. 1169/2011.
Ingredients
Bulking agent (microcrystalline cellulose), maltodextrin (from corn), capsule shell (hydroxypropyl methylcellulose), vitamin D3 (vegan cholecalciferol), anti-caking agents (magnesium salts of vegetable fatty acids, silicon dioxide), vitamin K2 (menaquinone-7). May contain traces of eggs, soy, milk and oats.
Product details
Food supplement. Store in a cool, dry place, protected from direct sunlight and freezing. Recommended daily dose: 1 capsule with a large glass of water. Do not exceed the recommended daily dose. Not recommended for children, pregnant or breastfeeding women. Keep out of reach of children. Not recommended for individuals taking anticoagulant medication. Individuals with gastric conditions should consult a physician before use. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.
Servings: 60
Serving: 1 capsule
Net weight: 50.7g
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