Diet contributes little to vitamin D supply; crucial is UVB sunlight for endogenous synthesis in the skin. A deficiency is particularly common in winter, but even in summer, factors such as sunscreen or darker skin types can inhibit vitamin D synthesis. Studies show that self-production often is not sufficient even in summer.

Vitamin D is essential for maintaining bones and teeth, muscle function, and the immune system, and it plays a role in cell division. For the maintenance of normal bones, it works closely with vitamin K: Vitamin D3 stimulates the production of osteocalcin, which is activated by vitamin K2 to efficiently store calcium in the bones.

Vitamin K2 is hardly absorbed through diet. Dr. Jacob’s Vitamin D3K2 Oil forte contains long-chain vitamin K2 (menaquinone-7) with high bioavailability and stability. It remains in the body for up to three days, about 50 times longer than vitamin K1.

• 2000 I.U. (50 µg) of Vitamin D3 + 50 µg of Vitamin K2 (all-trans MK-7) per drop
• Made in Germany with vitamin D3 + K2 from Europe in pharmacopoeial quality
• Optimal bioavailable and stable thanks to natural vitamin E
• Good for bones, muscles, and the immune system
• Excellent price-dose ratio: 640 drops, vegetarian

The vitamins contained in Dr. Jacob’s Vitamin D3K2 Oil forte contribute to the following normal body functions:

• Maintenance of bones – Vitamin D and K
• Maintenance of teeth – Vitamin D
• Maintenance of muscle function – Vitamin D
• Immune system – Vitamin D
• Plays a role in cell division – Vitamin D
• Normal absorption and utilization of calcium – Vitamin D
• Normal blood clotting – Vitamin K
• Reduction of fall risk – Vitamin D.