fiolkaNutreeVEG - vegan food supplement containing vitamins D3, B12 and K2.

The first product available in Poland suitable for Vegans which contains a unique composition of three vitamins crucial for proper organism functionality.

Composition in RDD (Recommended Daily Dose):

CompoundQuantity in 1 capsule% RDI* 
Vitamin D3 (cholecalciferol)  50 μg (2000 j.m)  1000%
Vitamin K2-MK7 (menachinon)  25 μg  33%
Vitamin B12 (cyanocobalamin)  250 μg  10 000%

*Reference Daily Intake

The high quality of the product is ensured by manufacturing in compliance with pharmaceutical regulations (GMP standards). NutreeVEG is registered by the Vegan Society.




  • Vitamin D3
  • Vitamin B12
  • Vitamin D3

    Organic compounds based on a steroid structure which affects a variety of physiological actions, fat soluble. Most important are two forms of vitamin D, distinguished by their type of side chain: ergocalciferol (vitamin D2) and cholecalciferol (vitamin D3).

    Vitamin D3 functions

    • Bone structure:

      Vitamin D influences processes of absorption and elimination of calcium and phosphorus. During a growth phase, it participates in forming bones and teeth. Vitamin D deficiency in children leads to rickets, impaired bone mineralization, and bone softening. In adults, it leads to bone aches, osteomalacia and osteoporosis. Vitamin D supports the immunological system by activating defense proteins.

    • Nervous and muscular system:

      Beneficial influence on the nervous and muscular systems is related to increased neuron regeneration and increased muscle strength. Vitamin D deficiency leads to myalgia and myopathy. There is a correlation between levels of vitamin D in the blood and sleep disorders. During pregnancy, a low vitamin D blood level may be responsible for acoustic disorders in newborn children.

    • Immunological system:

      Vitamin D3 may act as an immunomodulator, which may be considered as an antibacterial agent. It activates transcription of genes which code antibacterial peptides (natural antibiotics) – cathelicidin and β-defensin 2. Some research has revealed that vitamin D supplementation during childhood may result in a lower risk of type 1 diabetes. Higher levels of vitamin D3 in the blood may reduce the risk of SM (Sclerosis multiplex).

    • Cardiovascular system:

      Vitamin D regulates the renin-angiotensin-aldosterone system. For this reason, any deficiency may lead to hypertension and heart failure.

    • Metabolic action in other tissues:

      Vitamin D stimulates liver regeneration capabilities. Antiproliferation, antiangiogenic, and inducing of apoptosis functionality may result in anticancer effects.

    Prevention of vitamin D deficiencies allows reduction in the risk of:

    • Diabetes type 1
    • Breast and prostate cancer
    • Cardiac diseases
    • SM (Sclerosis multiplex)
    • Dental caries
    • Impaired bone mineralization and bone damage


    Living Room

    Strengthens heart functionality

    Dining Room

    Ensures suitable calcium and phosphorus management


    Helps in keeping teeth in shape

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    Modulates immunological processes


    The human organism is capable of synthetizing cholecalciferol via the skin. Therefore, less than an hour of sun provides a sufficient daily supply of vitamin D. During the summer season, this route is limited due to cosmetics with UV filters and recommendations to avoid extensive sun exposure. During the winter season, the synthesis is limited by lower exposure to daylight. As far as the sun being a source of vitamin D is concerned, we should also consider our lifestyle such as extended periods of time in closed rooms or reduced activity in the fresh air. Researchers estimate that regardless of diet type, almost one billion people suffer from periodical deficiencies of vitamin D – which is why supplementation is required.

    Natural sources of vitamin D apart from sunlight, are fish and to a lesser extent, also eggs. Until recently, food supplements were not designed for Vegans as most such products generally contain vitamin D2 of plant origin and D3 of animal origin.

    NUTREEVEG is first in Poland food supplement which contains vitamin D3 of non-animal origin.

    NutreeVEG contains vitamin D3 (cholecalciferol) suitable for Vegans, registered with the prestigious organization the Vegan Society. Our vitamin D is harvested from lichens and the material is extracted and purified to maintain the highest quality.

    Advantages of vitamin D3 over D2

    Scientists report that supplementing of vitamin D2 may result in lowering blood levels of general vitamin D which is why the results of its supplementation may be other than expected. Researchers in Norway noticed that in patients receiving 2000 IU of vitamin D2, the blood level of the active form D3 was reduced by 50% during an eight-week therapy. During follow-up research, they demonstrated that a daily intake of 2000 IU of vitamin D3 doubles its blood level after eight weeks.


    Recent publications recommend supplementation from the very beginning; Infants should receive 400 IU a day (avoiding extensive sunlight exposure), then 400-600 IU a day until the age of 1 year depending on the amount of vitamin D available in the diet.

    Kids and teenagers should receive vitamin D in doses of 600-1000 IU depending on body weight, especially during winter season and when sunlight exposure may not be sufficient.

    Similar to adults who during winter season (from September to April) should deliver 800-2000 IU.

    Elderly people (above 65) should supplement vitamin D throughout the year due to lower efficiency of skin synthesis.

    During pregnancy supplementation should begin at least from 2nd trimester in doses of 1500 – 2000 IU, always after consulting with gynecologist.

    Dosing for people with obesity or subjected to deficiencies may vary (in general, higher doses are required). In such cases, consulting with an MD is recommended.


    It is worth mentioning that these recommendations refer to the population as a whole, not just Vegans or Vegetarians. Vitamin D and vitamin B12 are two compounds which should be supplemented. Vitamin D is crucial for calcium management, which may be unbalanced in people on a vegan diet.

    The European Food Safety Authority (EFSA) sets the upper safety limit for vitamin D intake for adults at 100 µg (4000 IU) daily.



     Grammatiki, M., Karras, S. & Kotsa, K. Hormones (2018).

    Jeon and Shin Experimental & Molecular Medicine (2018) 50:20

    J Neurol Neurosurg Psychiatry May 2017 Vol 88 No 5 accessed on 1.12.2017

     Best Pract Res Clin Endocrinol Metab. 2011 Aug;25(4):585-91.

    Am Fam Physician. 2010 Mar 15;81(6):745-748. accessed on 1.12.2017

     Endokrynol Pol. 2010 Nov-Dec;61(6):723-9. accessed on 1.12.2017


    1. J. van Ballegooijen, J. W. Beulens , “The Role of Vitamin K Status in Cardiovascular Health Evidence from Observational and Clinical Studies” [2017]

    doi: https://10.1007/s13668-017-0208-8

    2. M. Fusaro, M.C. Mereu, A. Aghi, G. Iverasi, M. Gallieni, “Vitamin K and bone” [2017] doi: https://10.11138/ccmbm/2017.14.1.200

    3. S. Dasari, S. M. Ali, G. Zheng et al, “Vitamin K and its analogs Potential avenues for prostate cancer management” [2017] doi: https://10.18632/oncotarget.17997

    4. G. Ferland, “Vitamin K, an emerging nutrient in brain function” [2012]

    The common name for a group of compounds: K1 (fitochinon), K3 (menadion) and the K2 group (menachinons)

    Role of vitamin K

    Vitamin K’s main function is activation of calcium binding to proteins. Vitamin K1 contributes to blood coagulation processes while K2 is responsible for calcium distribution within the organism..

    • Cardiovascular system:

      Influences blood coagulation by activating calcium transporting proteins – fibrins and other factors initiating the coagulation process.

      Prevents cardiovascular diseases by reducing calcium deposition on vein surfaces [1].

    • Bone structure:

      Determines balanced bone metabolism – participates in bone mineralization (calcium management) by maintaining the function of MGP (Matrix Gla Protein). Reduces the risk of osteoporosis [2].

    Preventing deficiencies of vitamin K reduce the risk of:

    • osteoporosis
    • arteriosclerosis
    • blood and bone cancer [3]

    source of vitamin K

    The human organism is not capable of synthetizing vitamin K2. Daily intake is ensured by diet and to a minor extent by gut microorganisms. Antibiotics or impaired absorption may lead to its deficiency. Except for in animal liver (the richest source of vitamin K2), it also occurs in fermented food. Food of animal origin contains mainly subtype K2 MK-4 while plant sources provide various subtypes from MK-5 to MK-14. Subtypes from animal sources have longer half-life biological activity – type MK-7 lasts up to 72 hours while MK-4 only lasts 2.

    Vitamin K1 can be found in various green parts of vegetables, some plant oils, grain, fruits and dairy products.

    Humans can partly convert vitamin K1 into small amounts of vitamin K2 MK-4. This process is quite useful as the daily supply of vitamin K1 in diet is ten times higher than vitamin K2. However, researchers point out that the process itself is very inefficient and is mainly performed in those places where vitamin K2 cannot be properly absorbed. This is why supplementation of vitamin K2 is definitely more beneficial.

    NutreeVEG contains vitamin K2 (MK-7) – a thermodynamically stable form (maintaining its quality even after a several years of storage), highly absorbent for organisms. Can be supplemented by Vegetarians and Vegans. Vitamin K (K2 MK-7) should not be taken with anticoagulants and antithrombotic drugs.

    Benefits of vitamin K2 supplementation may be increased by co-administration with vitamin D3 as they act in synergy (mutually strengthen their respective functionalities).


    There is no defined recommended daily intake for vitamin K2 – recommendations generally correlate to the entire group of K vitamins. Adults should take about 55-65 µg of vitamin K daily (source: Nutrition Standards for Polish Population - Food and Nutrition Institute, Warsaw, 2012). In the European Union and United States of America, only 60% of the daily recommended dose of vitamin K1 is supplied within diet. For this reason, vitamin K supplementation is needed.


    1. J. van Ballegooijen, J. W. Beulens , “The Role of Vitamin K Status in Cardiovascular Health Evidence from Observational and Clinical Studies” [2017]

    doi: 10.1007/s13668-017-0208-8

    2. M. Fusaro, M.C. Mereu, A. Aghi, G. Iverasi, M. Gallieni, “Vitamin K and bone” [2017] doi: 10.11138/ccmbm/2017.14.1.200

    3. S. Dasari, S. M. Ali, G. Zheng et al, “Vitamin K and its analogs Potential avenues for prostate cancer management” [2017] doi: 10.18632/oncotarget.17997

    4. G. Ferland, “Vitamin K, an emerging nutrient in brain function” [2012]


    Living Room

    Strengthens heart functionality

    Dining Room

    Ensures healthy and strong bones


    Modulates nervous system functionality

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    Keeps teeth in good shape

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    Plays a crucial role in blood coagulation

  • Vitamin B12

    B12 is a water-soluble vitamin, essential for humans and efficient even in small doses. In its structure it contains a built-in trace element – Cobalt. Humans require Cobalt, which is absorbed only as vitamin B12.

    Active forms of vitamin B12 are adenosylcobalamin and methylcobalamin which are its coenzyme forms. A particularly stable form of vitamin B12 is cyanocobalamin which is easily converted to other forms in humans.

    Role of vitamin B12

    • Bone structure:
      Prevents anemia by participating in blood red cell formation. Determines proper metabolism of homocysteine.
      Enables synthesis of nucleic acids in cells, particularly in bone marrow[1].
    • Nervous system: 

      Participates in formation of the myelin sheath and neurotransmitters. Provides for good mood and metal balance as well as supporting learning processes and helping maintain focus [2].

      Provides support during depression and sleep disorders, reduces fatigue [3].

    • Immunological system:
      Modulates functions of the immunological system [4].

    Sources of vitamin B12

    Vitamin B12 is produced mainly by organisms present in animal guts – in humans, it is produced in symbiosis with bacteria. Unfortunately, this takes place in distal regions of the digestive system so vast amounts of this vitamin are excreted.

    Vegetarians partly supplement vitamin B12 with eggs and diary.

    For people on a vegan diet, the only remaining source of vitamin B12 is fortified foods like plant milk, some soy yogurts, and cereals.

    Fortified food may not be sufficient to cover the daily required intake of vitamin B12 as almost one liter of soy milk must be consumed to supply the recommended dose.

    Living Room

    Strengthens heart functionality

    Dining Room

    Modulates nervous system functionality


    Participates in the proper operation of the cardiovascular system

    Wit Icon4

    Ensures synthesis of nucleic acids

    Supplementing vitamin B12

    The recommended daily intake of vitamin B12 according to the Food and Nutrition Institute is 2,4 µg. Vitamins from group B are water soluble and any excess is excreted with urine – therefore overdosing is very unlikely.

    It is estimated that only about 1% of vitamin B12 from food supplements is absorbed. With a recommended dose of 2,4 – 3 µg, the amount in any supplement should, therefore, be 100 to 200 times higher than the daily recommendation.

    Deficiency of Iron or folic acid may reduce or even stop the absorption of vitamin B12.

    Pregnant women should receive 2.6 µg and breeding women 2.8 µg of vitamin B12 daily (250-500 µg in the form of food supplements) after consulting with their MD.

    There are two reasons for vitamin B12 deficiency – insufficient supply (especially for Vegetarians and Vegans) or impaired absorption (digestive system disorders). Additionally, antibiotics (which may be present in dairy), alcohol (which impacts metabolism in liver), tobacco, processed food, contraception or stress may increase the requirement for vitamin B12.

    A major consequence of vitamin B12 deficiency is megaloblastic anemia with its symptoms being fatigue, dizziness, and pale skin. For disorders of the nervous system, uncertainty of movement and abnormal posture may be apparent. In some cases, mental disorders and depression may be observed [5].

    Vitamin B12 is recommended for:

    • Vegans
    • Vegetarians
    • People suffering from anemia
    • People over 50 yers old
    • Tobacco smokers
    • People with insufficient blood level of vitamin B12
    • Pregnant and breeding women (after consulting with their MD)

    Supplementing vitamin B12 is safe.

    Intake of even a few thousand times higher than the recommended dose of vitamin B12 will not cause serious adverse effects, although in some cases minor allergic reactions are possible.


      1. S. Kim, C. H. Kim, J. Y. Park, „Effects of vitamin B12 on cell proliferation and cellular alkaline phosphatase activity in human bone marrow stromal osteoprogenitor cells and UMR106 osteoblastic cells.” [1996]
      2. Miller, M. Korem, R. Almog, Y. Galboiz, “Vitamin B12, demyelination, remyelination and repair in multiple sclerosis” [2015] https://10.1016/j.jns.2005.03.009 
      3. Phenninx et al., “Vitamin B(12) deficiency and depression in physically disabled older women: epidemiologic evidence from the Women's Health and Aging Study.” [2000] https://10.1176/appi.ajp.157.5.715
      4. Tamura et al., “Immunomodulation by vitamin B12: augmentation of CD8+ T lymphocytes and natural killer (NK) cell activity in vitamin B12-deficient patients by methyl-B12 treatment.” [1999] 
      5. W. Vilter et al., “Studies on the relationships of vitamin B12, folic acid, thymine, uracil and methyl group donors in persons with pernicious anemia and related megaloblastic anemias.” [1950]