Vitamin B complex refers to a group of eight essential water-soluble vitamins that play critical roles in various bodily functions. These vitamins include thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folate (B9), and cobalamin (B12). As water-soluble vitamins, they are not stored in the body for long periods and must be replenished regularly through diet or supplementation. Each B vitamin has a unique structure and specific functions, but they often work together to support cellular metabolism, energy production, neurological function, and the health of the skin, hair, and eyes. Deficiencies in one or more B vitamins can lead to a range of health problems, depending on the specific vitamin involved. Sources of B vitamins are diverse, including whole grains, meat, eggs, dairy products, legumes, leafy greens, and fortified foods. Supplementation is often considered when dietary intake is insufficient or when specific health conditions increase the need for these nutrients. (NIH Office of Dietary Supplements, MedlinePlus)
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Known interactions
Category rule: vitamin × medication
Note
Certain vitamins interact with specific medications (e.g., vitamin K with blood thinners).
Specific pairs are checked against a licensed source; confirm with your provider.
Frequently asked
Sources referenced
["NIH Office of Dietary Supplements","MedlinePlus","PubChem","Mayo Clinic","DrugBank","Examine.com","Cochrane Review","Linus Pauling Institute"]
Stackwise compiles summaries from publicly available scientific and regulatory references. Always verify important decisions with a licensed clinician.
Related compounds
Others in the vitamin category or studied for the same goals.