vitamin: Quick Facts

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Photos and Videos

Several translucent, oval-shaped vitamin E gel capsules are scattered on a white surface near a partially visible bottle.

A flowchart illustrates the progression of vitamin deficiency, starting with a series of animals becoming paler to represent declining vitamin levels, leading to cellular dysfunction, then organ illness, and potentially death, with arrows showing stages and possible symptoms or effects.

Diagram showing how B-vitamin coenzymes, such as vitamin B6, folic acid, and biotin, assist in metabolic pathways involving carbohydrates, fats, and proteins, highlighting their roles in energy production and the tricarboxylic acid cycle.

Natural vs. synthetic vitamins: Is there a difference?

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Topics

vitamin D vitamin A vitamin C vitamin K vitamin E Choline vitamin B complex Carnitine para-aminobenzoic acid human nutrition Protein Hormone Lipid carboxylic acid hydrocarbon heterocyclic compound organosulfur compound Nucleic acid Carbohydrate Steroid

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Key People

Frederick Gowland Hopkins

Sir Frederick Gowland Hopkins

British biochemist

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Richard Kuhn

German scientist

Mendel, Lafayette Benedict

Lafayette Benedict Mendel

American biochemist

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Joshua Harold Burn

British pharmacologist