Vitamin D3K2 Spray | For bones, muscles & the immune system

Spray 1 puff directly into the mouth - for optimal absorption, onto the inside of the cheek or under the tongue. Hold the spray in your mouth for 20 - 60 seconds so that it can be absorbed through the oral mucosa.

The recommended dosage is 1 spray per day. This provides a daily dose of 2,000 IU D3 and 200 µg K2 (MK-7 all-trans). One bottle will last approximately 83 days – about 3 months.

Note: It is not a problem to skip a day (e.g., Sunday) or a weekend, or to forget a dose once – especially with long-term use. Vitamin D is stored in fatty tissue and remains available to the body.

Vitamin D3 improves calcium absorption in the body. Vitamin K2 ensures that this calcium is deposited into the bones—and not in the blood vessel walls. K2 is the missing puzzle piece for safe, long-term D3 intake.

MK-7 all-trans is the most bioavailable form of vitamin K2. It has a half-life of approx. 48-72 hours – compared to only 1-4 hours for vitamin K1 or 1-2 hours for K2-MK4. This means: consistent supply instead of strong fluctuations.

The all-trans geometry also ensures that K2 can dock better to the enzymes that require K2 for their function – meaning the vitamin is better utilized and works more reliably.⁶

Drops are often difficult to dose – sometimes nothing comes out, sometimes too much. The spray delivers a precise dose per spray, with no loss of active ingredient. No drops remain "stuck in the bottle."

MCT oil (medium-chain triglycerides from coconut) serves as a carrier for the fat-soluble vitamins D3 and K2. It ensures optimal absorption – without you needing a separate fat source.

No. Our spray follows the pure substance principle: Vitamin D3, Vitamin K2 (MK-7 all-trans) and MCT oil. No fillers, no magnesium stearate, no silicon dioxide.

At the recommended dosage (1 spray per day), one bottle contains 83 daily doses – this corresponds to almost 3 months' supply.

Yes – and there’s a reason for that. The cost driver is the high K2 dosage (200 mcg MK-7 all-trans) with an everyday D3 dose of 2,000 IU per day. Competitors who are cheaper often have significantly less K2 or couple K2 with excessively high D3 doses that are only taken every 5, 10, or 20 days.

Such high-dose intervals may seem practical at first glance, but they offer more room for dosage errors. They are increasingly viewed critically because blood levels fluctuate more, very high short-term levels can activate regulatory enzymes, and studies have shown partly less positive or even detrimental effects on falls and fractures (cf. BfR statement on the intake of high single doses of Vitamin D in dietary supplements at intervals of days or weeks).

With ARTZT neuro, you pay for a constant, everyday supply in the correct ratio.