Vitamin D3 4000 IU + K2 100 mcg: Powerful Immunity, Strong Bones and Teeth, Cardiovascular Support, Optimal Calcium Absorption and Muscle Function

Vitamin D3 4000 IU + K2 100 mcg, OstroVit is a premium dietary supplement created to support some of the most important systems of the body: immunity, bone and teeth health, muscle function and cardiovascular balance. The formula combines two essential micronutrients that work synergistically: Vitamin D (100 μg / 4000 IU – 2000% NRV) and Vitamin K (100 μg – 133% NRV). This association is considered one of the most effective nutritional strategies for managing calcium in the body, supporting both its absorption and direction to the areas where it is needed.

Vitamin D3 is a key nutrient for immune system functioning and for maintaining normal levels of calcium and phosphorus in the blood. It contributes to intestinal absorption of calcium and bone mineralization, being essential for bone density and preventing skeletal fragility. Additionally, vitamin D has an important role in muscle function and maintaining general energy state, especially during periods with reduced sun exposure, when skin synthesis decreases significantly.

Vitamin K2 is the perfect complement to D3, because it intervenes in the processes of "directing" calcium, supporting the activation of vitamin K-dependent proteins involved in bone and vascular metabolism. In other words, while vitamin D helps with calcium absorption, vitamin K contributes to its correct use in the body, supporting deposition at the bone level and maintaining blood vessel health. This synergy transforms the OstroVit formula into advanced long-term health support, especially for people pursuing prevention, vitality and maintaining a solid bone structure.

Detailed Benefits of Vitamin D3 4000 IU + K2 100 mcg

 

• Powerful immunity: support for natural defense response

The immune system depends on a fine balance between reaction and control. Vitamin D is one of the most important micronutrients involved in immunity modulation, because it participates in activating defense mechanisms at the cellular level and supports physiological response during demanding periods. Especially in the cold season, during periods of stress or fatigue, low vitamin D levels can influence the body's resistance.

Vitamin D3 4000 IU can contribute to:
✅ supporting normal immune system function
✅ better resistance in cold season and periods of vulnerability
✅ maintaining a balanced immune response
✅ general vitality through metabolic and immune support

This benefit is essential for people with intense schedules, parents, people exposed in communities or anyone who desires constant support for natural defense.

 

• Strong bones and bone density: optimal mineralization through D3 + K2

Bone health depends on calcium availability and the body's ability to fix it in the bone matrix. Vitamin D increases calcium absorption at the intestinal level, and vitamin K contributes to activating proteins involved in calcium deposition in bone. This combination supports a complete mineralization process, which is important both for young people (bone mass formation) and for adults and elderly (density maintenance).

The formula can support:
✅ maintaining bone mineral density
✅ reducing the risk of bone fragility through nutritional support
✅ skeleton resistance over time
✅ supporting joint health through a stable bone structure

For many people, this support is crucial especially if they have a sedentary lifestyle, diet poor in calcium or reduced sun exposure.

 

• Stronger teeth and oral health

Teeth are a mineral structure that depends on calcium and phosphorus metabolism, just like bones. Vitamin D contributes to maintaining normal calcium levels in the body, and vitamin K supports processes associated with mineral use in healthy calcified structures.

It can contribute to:
✅ maintaining tooth health and their mineral structure
✅ support for enamel resistance through mineral balance
✅ supporting long-term oral health
✅ maintaining mineralized tissue integrity

This benefit is even more relevant when the goal is prevention and maintaining oral health, especially in combination with a correct hygiene routine.

 

• Muscle function and physical performance: strength, tone and endurance

Vitamin D is involved in muscle functioning, influencing contraction, tone and adaptation to effort. Adequate vitamin D levels support normal muscle activity, which can be important both for active people and for sedentary ones, because musculature plays a major role in joint stability and skeletal protection.

The formula can support:
✅ normal muscle function and better tone
✅ reducing the feeling of weakness associated with D deficiency
✅ physical endurance and adaptation to effort
✅ functional recovery through metabolic support

This benefit is especially appreciated by athletes, people who go to the gym, but also by those who want to maintain their mobility and stability long-term.

 

• Cardiovascular support: correct calcium management and vessel health

One of the most important reasons for associating D3 with K2 is supporting mineral balance at the vascular level. Vitamin D supports calcium absorption, and vitamin K2 is associated with activating K-dependent proteins, which support adequate calcium use in the body. Through this synergy, the formula offers important support for maintaining cardiovascular health and blood vessel elasticity.

It can contribute to:
✅ maintaining normal vascular function
✅ supporting blood vessel elasticity
✅ functional mineral balance, useful for long-term health
✅ cardiovascular support within a balanced lifestyle

This advantage makes the product relevant for people concerned with prevention and maintaining metabolic and cardiovascular health.

 

• Efficient calcium absorption and its correct use in the body

Calcium is essential, but it is not enough to be consumed: it must be absorbed and used correctly. Vitamin D contributes to calcium absorption, and vitamin K supports the processes that integrate it into mineralized tissues (bones, teeth). This formula offers complete support for mineral management.

It can support:
✅ better calcium absorption from diet
✅ optimal calcium use at bone level
✅ maintaining calcium-phosphorus balance
✅ supporting mineralization processes

For people who consume calcium or pursue bone health, the D3 + K2 synergy is one of the most important nutritional associations.

 

• General well-being and vitality through metabolic role

Vitamin D has an extended role in the body, including in metabolic processes and supporting general state. When levels are adequate, many people report a better feeling of energy, more stable mental tone and better capacity to adapt to stress.

The formula can support:
✅ daily vitality and background energy
✅ metabolic balance and resistance to fatigue
✅ general well-being, especially in cold season
✅ support for a more stable daily rhythm

 

 

Directions for use

Take 1 serving (1 tablet) daily with a meal.



 

Supplement facts
Serving Size: 1 Tablet
Servings Per Container: 100
Active Ingredients	Amount Per Serving	%Daily Value
Vitamin K	100 µg	133%
Vitamin D	100 µg (4000 IU)	2000%
*RI – Reference intake.

 

 

 

Other Ingredients

Bulking agent: microcrystalline cellulose; starch, cholecalciferol (vit. D), menaquinone-7 MK-7 (vit. K) from Bacillus subtilis natto, anti-caking agents: magnesium salts of fatty acids, silicon dioxide.
Manufactured in a facility that uses ingredients derived from milk (including lactose), soy, peanuts, other nuts, gluten-containing cereals, eggs, crustaceans and fish.


 

Warnings

Do not exceed the recommended daily dose. The dietary supplement should not be used as a substitute for a varied diet. A balanced diet and healthy lifestyle are recommended. Do not consume if you are allergic to any of the product ingredients. The product should not be used by children, pregnant women, nursing mothers and people taking anticoagulants containing vitamin K antagonists (e.g., warfarin and acenocoumarol). Keep out of reach of small children.