Vitamins & minerals
Vitamin C
Names you may see: ascorbic acid ascorbate
The quick take
Vitamin C supports collagen formation, antioxidant functions and immune function, and helps absorb non-haem iron.
A closer look
What forms will I see on a label?
Ascorbic acid and mineral ascorbates are common forms. Check the vitamin C amount in combination formulas.
Why people use it
People choose vitamin C for immune support, antioxidant functions and collagen formation. It is used in daily wellness routines as well as multivitamins.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Adequate intake is essential. Routine supplementation does not prevent colds in most people, although it may modestly shorten their duration.
What should I know before using it?
High supplemental intakes can cause diarrhoea or cramps. Seek advice with kidney-stone history or iron-overload disorders.
Sources & further reading
NIH Office of Dietary Supplements ↗
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.