Several well-studied nutrients contribute to the normal function of the immune system — and keeping them topped up is a smart, simple habit, especially in winter.
Vitamin C
Vitamin C contributes to the normal function of the immune system and helps protect cells from oxidative stress. It's the classic immune nutrient — our Simple C makes a daily dose easy.
Vitamin D
Vitamin D also contributes to normal immune function and is one many UK women are low in over winter — a daily multivitamin or dedicated supplement helps.
Zinc
Zinc contributes to the normal function of the immune system too, which is why it's often paired with vitamin C.
Antioxidant support
Antioxidant-rich foods and blends like Acai Immunity add plant variety alongside vitamin C for everyday support.
The foundations still matter most
Sleep, a varied diet, movement and washing your hands do the heavy lifting. Supplements help fill gaps — they aren't a force field.
Frequently asked questions
Does vitamin C stop you getting colds?
It supports normal immune function but isn't a guaranteed cold-blocker. Consistent everyday intake is the point.
What's the best immune supplement?
Vitamin C, vitamin D and zinc are the most evidence-backed starting points.
This article is for general information and isn't medical advice. If you're pregnant, breastfeeding, taking medication or managing a health condition, please speak to your GP before starting any new supplement.