VITAMIN D3+K2 60caps/60serv
VITAMIN D3+K2 60caps/60serv
VITAMIN D3+K2 60caps/60serv
Load image into Gallery viewer, VITAMIN D3+K2 60caps/60serv
Load image into Gallery viewer, VITAMIN D3+K2 60caps/60serv
Load image into Gallery viewer, VITAMIN D3+K2 60caps/60serv

VITAMIN D3+K2 60caps/60serv

Genius Nutrition®
€11,30
€11,30
Sale Sold out
/
Tax included. Shipping calculated at checkout.
In stock and ready for shipping
This is a pre order item. We will ship it when it comes in stock.
Great match with
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.

50µg Vitamin D3 / serving 50µg Vitamin K2 MK-7 1000% NRV Vit. D Vegan cholecalciferol Gluten Free · Lactose Free
50µgVitamin D3 / serving
50µgVitamin K2 MK-7
1000%NRV Vitamin D
60Days of support

*NRV: Nutrient Reference Values according to (EU) No. 1169/2011. See product label for full information.

GENIUS NUTRITION Vitamin D3 K2 60 vegan capsules cholecalciferol menaquinone-7
Vegan D3 · 50µg Cholecalciferol from plant sources, active form, 1000% NRV per capsule.
K2 MK-7 · 50µg Menaquinone-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.

GENIUS NUTRITION® Vitamin D3 + K2

Complete formula
  • D3 + K2 MK-7, complete calcium utilisation circuit
  • 50µg vegan D3 (2000 IU) + 50µg K2 MK-7 per capsule
  • 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 absence Journal of Bone and Mineral Research, 2011
72h half-life of MK-7 (menaquinone-7), providing constant biological activity from a single daily capsule Blood Coagulation and Fibrinolysis, 2007
+25% greater bone mineral density with D3 + K2 combination versus D3 alone in comparative clinical studies Osteoporosis International, 2013

Studies and documented mechanisms

1
Vitamin D3 and calcium absorption · confirmed intestinal mechanism Studies 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 trial A 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 documented Matrix 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 monotherapy A 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 prevalence A 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

  1. Heaney RP et al. (2003). Human serum 25-hydroxycholecalciferol response to extended oral dosing with cholecalciferol. American Journal of Clinical Nutrition. PMID 14632730
  2. Knapen MHJ et al. (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporosis International. PMID 23525894
  3. Schurgers LJ et al. (2007). Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. PMID 17100584
  4. 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
  5. Cashman KD et al. (2016). Vitamin D deficiency in Europe: pandemic? American Journal of Clinical Nutrition. PMID 26676070
  6. 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.

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.

50µg Vitamin D3 / serving 50µg Vitamin K2 MK-7 1000% NRV Vit. D Vegan cholecalciferol Gluten Free · Lactose Free
50µgVitamin D3 / serving
50µgVitamin K2 MK-7
1000%NRV Vitamin D
60Days of support

*NRV: Nutrient Reference Values according to (EU) No. 1169/2011. See product label for full information.

GENIUS NUTRITION Vitamin D3 K2 60 vegan capsules cholecalciferol menaquinone-7
Vegan D3 · 50µg Cholecalciferol from plant sources, active form, 1000% NRV per capsule.
K2 MK-7 · 50µg Menaquinone-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.

GENIUS NUTRITION® Vitamin D3 + K2

Complete formula
  • D3 + K2 MK-7, complete calcium utilisation circuit
  • 50µg vegan D3 (2000 IU) + 50µg K2 MK-7 per capsule
  • 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 absence Journal of Bone and Mineral Research, 2011
72h half-life of MK-7 (menaquinone-7), providing constant biological activity from a single daily capsule Blood Coagulation and Fibrinolysis, 2007
+25% greater bone mineral density with D3 + K2 combination versus D3 alone in comparative clinical studies Osteoporosis International, 2013

Studies and documented mechanisms

1
Vitamin D3 and calcium absorption · confirmed intestinal mechanism Studies 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 trial A 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 documented Matrix 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 monotherapy A 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 prevalence A 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

  1. Heaney RP et al. (2003). Human serum 25-hydroxycholecalciferol response to extended oral dosing with cholecalciferol. American Journal of Clinical Nutrition. PMID 14632730
  2. Knapen MHJ et al. (2013). Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporosis International. PMID 23525894
  3. Schurgers LJ et al. (2007). Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. PMID 17100584
  4. 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
  5. Cashman KD et al. (2016). Vitamin D deficiency in Europe: pandemic? American Journal of Clinical Nutrition. PMID 26676070
  6. 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.