Immunity

Vitamin C, zinc, vitamin D, garlic, echinacea, propolis and mushroom extracts, in tablets, capsules, sachets, powders, tinctures and gummies. Brands include Natures Aid, Viridian, HealthAid, Lamberts, Biocare and Quest.

Which nutrients contribute to normal immune function?

Quite a few, and these are authorised 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 in winter

Between October and early March, sunlight in the UK is not strong enough for the skin to make vitamin D, and the NHS advises that everyone considers a daily supplement over those months. It is the single most evidence-backed item in this collection and among the least expensive.

What about elderberry, echinacea and garlic?

All three are long-standing sellers and none carries an authorised health claim in Great Britain. Some echinacea products hold a Traditional Herbal Registration, which is granted on the basis of traditional use rather than clinical evidence - the details are on the pack. We stock them because customers ask for them, and we would rather be straight about where the evidence stands.

Liposomal vitamin C

Altrient and the Zooki range use a liposomal delivery format, where the vitamin is encapsulated in a phospholipid. They sit at a higher price point than standard vitamin C and are among the products customers most often ask us to explain. The authorised claims are the same as for any vitamin C product.

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