How do I take the D3+K2 tablets and how long does a pack last?
Take 1 tablet a day with water, preferably with a meal containing fat.
One pack contains 100 tablets. At 1 tablet a day that is 100 days.
What allergen information does the manufacturer give for the D3+K2 tablets?
Allergens: produced in a facility that processes fish (according to the manufacturer).
What is in one D3+K2 tablet?
Per daily dose (1 tablet): Vitamin D3 (cholecalciferol) 100 µg (4000 IU) (2000% RI); vitamin K2 (menaquinone-7, MK-7) 100 µg (133% RI).
The full ingredient list is in the Composition tab.
Why D3 and not D2, and why K2 as MK-7?
This product contains vitamin D3 as cholecalciferol and vitamin K2 as menaquinone-7 (MK-7). In supplements, vitamin D is used as D3 (cholecalciferol) or D2 (ergocalciferol); vitamin K as K1 (phylloquinone) or K2 (menaquinones, such as MK-7).
All these forms are permitted in food supplements in the EU. We make no statements about differences in effect.
What is MK-7 in the D3+K2 tablets?
MK-7 is menaquinone-7, a form of vitamin K2. In this product it comes from Bacillus subtilis natto. One tablet contains 100 µg vitamin K2 (MK-7), which is 133% RI.
Why are vitamin D3 and K2 combined in one tablet?
This way you take both vitamins with one tablet a day. The EU health claims further down in this FAQ apply to each vitamin separately; there is no separate claim for the combination.
How many µg is 4000 IU of vitamin D3 in the D3+K2 tablets?
IU (international unit) and µg are two ways of stating the same amount of vitamin D: 1 µg = 40 IU. One tablet contains 100 µg vitamin D3, which is 4000 IU.
Isn't 4000 IU of vitamin D3 per D3+K2 tablet too much?
The reference intake (RI) for vitamin D is 5 µg a day. One tablet provides 100 µg (4000 IU), which is 2000% RI.
EFSA has set a tolerable upper intake level (UL) for adults of 100 µg vitamin D a day, from all sources combined. Stick to 1 tablet a day.
What is the difference between D3+K2 and vitamin D3 alone?
Besides vitamin D3, this product also contains vitamin K2: 100 µg MK-7 per tablet. If you only want vitamin D3, a single D3 supplement is an alternative.
Which EU health claims apply to OstroVit Vitamin D3 4000 IU + K2?
These are the health claims the EU has authorised for the vitamins in this product:
- Vitamin D contributes to the maintenance of normal bones
- Vitamin D contributes to the maintenance of normal teeth
- Vitamin K contributes to the maintenance of normal bones
- Vitamin D contributes to the normal function of the immune system
- Vitamin D contributes to normal absorption/utilisation of calcium and phosphorus
- Vitamin D contributes to normal blood calcium levels
- Vitamin D contributes to the maintenance of normal muscle function
- Vitamin K contributes to normal blood clotting
- Vitamin D has a role in the process of cell division
How do I know OstroVit Vitamin D3 4000 IU + K2 contains what the label says?
Made in the EU (Poland). The certificate of analysis (CoA) is available per batch on request via coa@suppstore.com. State the EAN (5903246220278) or the batch number on your packaging and we will send the certificate for your batch.
How should I store the D3+K2 tablets and what is the shelf life?
Storage: 15-25 °C, dry, in the original closed packaging, away from sunlight.
The best-before date and the batch number are on the packaging.
How is my order shipped?
Every order ships with Track & Trace, so you can follow your parcel. You will see the shipping costs and the expected delivery time for your address before you pay.
How can I pay?
You pay safely with 20+ trusted payment methods on a secure payment page.
Can I return my order?
Yes. You have a 100-day money-back guarantee: return products within 100 days and you get your money back. Returns are free. For hygiene reasons, we do not accept opened packaging. Read our refund policy.