How does vitamin C work?

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    Last Updated: May 16, 2025

    Vitamin C functions as a cofactor for enzymes involved in collagen synthesis and acts as an antioxidant. It is essential for humans, who cannot synthesize it, and a deficiency can lead to scurvy.

    Vitamin C acts as a cofactor for various enzymes, notably enzymes involved in collagen synthesis, and as an antioxidant.[1] It is an essential vitamin that humans cannot synthesize, so it must be acquired through dietary intake. Deficiencies in this vitamin results in scurvy, a condition caused by a lack of vitamin C.[1]