Not a diagnostic service. Our wellness infusions make no therapeutic claims; prescription treatments such as iron infusions are provided only after clinical diagnosis, a valid prescription and a suitability assessment. Every infusion is individually screened and may be declined on clinical grounds.

Immunity

Vitamin C, antioxidants and immune support

3 December 2025 · 4 min read

Vitamin C is probably the most famous vitamin of all, with a long-standing reputation for supporting the immune system. Let us look at what it actually does — and where the sensible limits of those claims lie.

What vitamin C contributes to

Vitamin C contributes to the normal function of the immune system, helps protect cells from oxidative stress as an antioxidant, and supports normal collagen formation for healthy skin, blood vessels and connective tissue.

  • Normal immune system function
  • Protection of cells from oxidative stress
  • Normal collagen formation
  • Helping to reduce tiredness and fatigue

A realistic view

Supporting normal immune function is not the same as preventing or curing colds, flu or any infection. Vitamin C is one helpful piece of a much bigger picture that includes sleep, nutrition, movement and managing stress. We are careful never to overstate what a drip can do.

Vitamin C in our blends

Some of our drips include vitamin C alongside fluids and other nutrients as general wellness support. If you are feeling unwell or run-down in a way that worries you, please see your GP rather than relying on a wellness infusion.

Explore the evidence behind the nutrients we use.

Read the research

This article is general information only and is not a substitute for advice from your GP or a registered medical practitioner. VitalLine's wellness infusions make no therapeutic claims and are subject to clinical suitability and screening. Iron infusions are a prescription medicine, provided only after clinical assessment.

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