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Vitamin - Wikipedia

en.wikipedia.org

A vitamin is an organic compound and a vital nutrient that an organism requires in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when the organism cannot synthesize the compound in sufficient quantities, and it must be obtained through the diet; thus...

Vitamin - New World Encyclopedia

www.newworldencyclopedia.org

Retinol (Vitamin A). Vitamins are organic (carbon-containing) nutrients obtained through the diet and essential in small amounts for normal metabolic reactions.

Vitamin - Simple English Wikipedia, the free encyclopedia

simple.wikipedia.org

A vitamin is a chemical compound that is needed in small amounts for the human body to work correctly. They include Vitamin A, many B vitamins (like B1, B2, B3, B6, and B12), Vitamin C, Vitamin D, Vitamin E, and Vitamin K. For example...

Vitamin dictionary definition | vitamin defined

www.yourdictionary.com

Vitamin Purposes and Sources. Vitamin A - aids in growth, appetite, taste and eyesight. If you don’t get enough vitamin A, you may find yourself experiencing night blindness.

vitamin - Wiktionary

en.wiktionary.org

1920, originally vitamine (1912), from Latin vīta ‎(“life”) (see vital) + amine (see amino acids). Vitamine coined by Polish biochemist Casimir Funk after the initial discovery of aberic acid (thiamine), when it was thought that all such nutrients would be amines.

Vitamin | Article about vitamin by The Free Dictionary

encyclopedia2.thefreedictionary.com

vitamin, group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction.

vitamin | chemical compound | Britannica.com

www.britannica.com

vitamin B1. component of a coenzyme in carbohydrate metabolism; supports normal nerve function. impairment of the nerves and heart muscle wasting.

Vitamin | Define Vitamin at Dictionary.com

www.dictionary.com

vitamin. (vī'tə-mĭn) Any of various organic compounds that are needed in small amounts for normal growth and activity of the body.

Vitamin

www.cs.mcgill.ca

In humans there are thirteen vitamins, divided into two groups; four fat-soluble vitamins (A, D, E and K), and nine water-soluble vitamins (eight B vitamins and vitamin C).

Vitamin D — Health Professional Fact Sheet

ods.od.nih.gov

Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a dietary supplement.

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