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NutriReference / Nutrients / Vitamins
Vitamins
Vitamins
Explore essential micronutrients used in growth, energy metabolism, immune and cellular functions.
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Guides in this category
Each guide separates roles, daily needs, deficiency context, normal food sources, safety and scientific references.
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Vitamins
Vitamin B12
Vitamin B12 (cobalamin) is a water-soluble vitamin required for normal red blood cell formation, DNA synthesis and normal neurological function. Unli…
Read guide →V
Vitamins
Vitamin D
Vitamin D is a fat-soluble vitamin obtained from some foods and supplements and also produced in skin after UVB exposure. It is central to calcium an…
Read guide →V
Vitamins
Vitamin C
Vitamin C is a water-soluble antioxidant and enzyme cofactor. It is required for collagen synthesis, participates in immune function and improves abs…
Read guide →F
Vitamins
Folate (Vitamin B9)
Folate is a water-soluble B vitamin involved in one-carbon metabolism, DNA and RNA synthesis and amino-acid metabolism. Folic acid is a synthetic for…
Read guide →B
Vitamins
Biotin (Vitamin B7)
Biotin (vitamin B7) is a water-soluble B vitamin that serves as a cofactor for several carboxylase enzymes involved in fatty-acid, glucose and amino-…
Read guide →V
Vitamins
Vitamin A
Vitamin A is a fat-soluble nutrient involved in normal vision, immune function, cellular communication, growth and development. Foods provide either …
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Vitamins
Vitamin K
Vitamin K is a family of fat-soluble compounds required for the activation of proteins involved in normal blood clotting and bone metabolism.
Read guide →V
Vitamins
Vitamin E
Vitamin E is a fat-soluble nutrient with antioxidant activity. Alpha-tocopherol is the form used to meet human vitamin E requirements and helps prote…
Read guide →HOW TO USE THE GUIDES
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