Nutravita Vitamin D3 4000 IU & Vitamin K2 100μg (MK7) | Supports Bone | 180 Tablets

Optimizing your bone and cardiovascular health requires more than just high-strength nutrients; it requires precise biological synergy. Nutravita Vitamin D3 & Vitamin K2 MK7 provides a high-potency blend designed to manage the 'Calcium Paradox'—the phenomenon where calcium may deposit in arteries rather than bones if not properly directed. By combining 4000 IU of Vitamin D3 with 100mcg of Vitamin K2, this formula ensures that the calcium your body absorbs is managed effectively, supporting skeletal integrity, immune resilience, and vascular flexibility.

Scientific Deep Dive: The D3/K2 Necessity

Modern nutritional science has shifted from viewing Vitamin D3 as a standalone supplement to recognizing its critical dependence on Vitamin K2 (Menaquinone-7). Vitamin D3, or Cholecalciferol, functions as a pro-hormone that is converted in the body into calcitriol. This active form induces the synthesis of specific calcium-binding proteins, significantly increasing the efficiency of intestinal calcium absorption into the bloodstream. However, high levels of Vitamin D3 alone only increase the production of these proteins in their inactive, under-carboxylated state. This is where Vitamin K2 MK-7 acts as the biological 'traffic cop.' K2 serves as an essential cofactor for the enzyme gamma-glutamyl carboxylase, which activates two vital proteins: Osteocalcin and Matrix Gla Protein (MGP). Osteocalcin is responsible for binding ionic calcium and integrating it into the bone matrix, supporting bone mineral density and structural integrity. Simultaneously, activated Matrix Gla Protein acts as a potent inhibitor of soft tissue calcification, helping to ensure that calcium does not deposit in the arterial walls, thereby maintaining cardiovascular health and vascular elasticity. The 4000 IU (100mcg) dosage of Vitamin D3 in this product represents the Tolerable Upper Intake Level (UL) established by international health authorities. It is specifically designed to address systemic needs for immune modulation and skeletal maintenance, especially during periods of low sunlight exposure. When paired with 100mcg of MK-7—which possesses a superior 72-hour half-life compared to other forms of K2—the result is a robust, long-lasting support system for systemic health.

Key Product Benefits

Usage Guide

For maximum efficacy, take one tablet daily, preferably with a meal containing dietary fats (such as avocado, olive oil, or nuts). Because Vitamin D3 and K2 are fat-soluble, their absorption is significantly enhanced when consumed with lipids. Consistent daily usage is recommended to maintain optimal nutrient levels in the blood. If you are taking weight-loss medications like Orlistat or corticosteroids, please separate the dose by at least two hours to prevent absorption interference.

Safety Information

Frequently Asked Questions

Why must Vitamin D3 be taken with Vitamin K2? What makes MK-7 superior to other forms of Vitamin K2? Is the 4000 IU dose of Vitamin D3 safe for everyone?