OstroVit Vitamin D3 4000 + K2 Vegan comes in a 100-tablet pack, with each tablet delivering 4000 IU (100 µg) of cholecalciferol alongside 100 µg of vitamin K2 in its MK-7 (menaquinone-7) form. Both vitamins are fat-soluble, and the two are combined here because they work alongside one another in the body. The D3 is derived from Icelandic lichen rather than lanolin, making this a fully plant-based formula with no ingredients of animal origin.
The K2 MK-7 used in this product is sourced from Bacillus subtilis natto, a bacterial fermentation process, and is widely regarded as one of the more bioavailable forms of vitamin K2. Tablets are compact and straightforward to swallow, which suits those who prefer a simple, unflavoured supplement over powders or liquids.
This is a solid everyday option for those following a vegan or vegetarian diet who want a combined D3 and K2 supplement without animal-derived ingredients. OstroVit is a well-regarded European sports nutrition brand known for clear-label formulations and consistent manufacturing standards.





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