Immune Support

71 products built around vitamin C, vitamin D, zinc, elderberry, echinacea, propolis and live cultures, in capsules, tablets, liquids, sachets and gummies. Brands include Natures Aid, Biocare, Higher Nature, Udo's Choice, Bee and You and Allicin Max.

Which nutrients contribute to normal immune function?

These are approved claims rather than marketing: vitamin C, vitamin D, vitamin A, vitamin B6, vitamin B12, folate, zinc, selenium, copper and iron all contribute to the normal function of the immune system. Vitamin C and zinc also contribute to the protection of cells from oxidative stress.

Vitamin D over the winter

Between October and early March there is not enough UVB in UK sunlight for the skin to make vitamin D, and the NHS advises everyone considers a daily supplement over those months. Of everything in this collection it has the strongest evidence behind it and it is among the cheapest.

Elderberry, echinacea and propolis

All popular, none carrying an authorised health claim in Great Britain. Some echinacea products hold a Traditional Herbal Registration, granted on the basis of long-standing use rather than trials - where that applies, the pack says so. Propolis and bee products are worth avoiding if you have a bee sting allergy.

What supplements cannot do

Nothing here prepares you for a specific infection or replaces vaccination, and nothing here should delay seeing a doctor if you are unwell. Sleep, not smoking and a reasonable diet do more for immune function than anything on this page.

Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle.