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Vitamin C

Also known as Ascorbic acid, Sodium ascorbate

What it is: Water-soluble antioxidant vitamin
What it does: Supports collagen synthesis, immune function, and iron absorption
Status: Widely used supplement
Evidence: Moderate. Extensive human data.
Uses: Immune support; skin health; general antioxidant support

Caution. High doses can cause GI upset or diarrhea in some people.

Summary

Vitamin C is a water-soluble vitamin that acts as an antioxidant and is required for collagen synthesis, immune function, and non-heme iron absorption. It is commonly taken for general immune and skin support, and to enhance iron absorption from plant foods. Intakes above the gut's absorption capacity often lead to loose stools, which limits practical dosing.

Checked Jul 19, 2026.

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This entry summarises published information in plain language. It is not medical advice, a dosing recommendation or a substitute for a qualified healthcare professional. Many peptides are not approved for human use, and legal status varies by country. Check anything you rely on against primary sources.