Vitamin C & Immune

Vitamin C contributes to the normal function of the immune system. This collection brings together vitamin C and immune-related food supplements in a range of formats, including tablets, effervescent tablets, chewables and liquids, so you can choose one that fits your routine.

Formats differ mainly in convenience rather than in what they deliver. Tablets are easy to carry, effervescent tablets dissolve into a drink, and chewables or liquids suit anyone who finds tablets difficult to swallow. Some products combine vitamin C with zinc or other ingredients, so check the label for the amount of each nutrient per serving.

The HSE advises that adults aged 19 to 64 need 40mg of vitamin C a day, which most people get from a balanced diet, and that more than 1,000mg a day can cause stomach symptoms. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. You may also find our allergy & hayfever relief range useful.

Related categories

Vitamin DVitamin D MultivitaminsMultivitamins Kids Vitamins & SupplementsKids Vitamins & Supplements Probiotics & Gut HealthProbiotics & Gut Health

Frequently Asked Questions

Which vitamin C format should I choose? +
Tablets, effervescent tablets, chewables and liquids all provide vitamin C. The best format is the one you will take consistently: tablets are easy to carry, effervescent tablets make a drink, and chewables or liquids suit anyone who finds tablets hard to swallow. Check the amount per serving on the label, as this varies between formats and brands.
How much vitamin C do I need each day? +
The HSE advises that adults aged 19 to 64 need 40mg of vitamin C a day, which most people get from a balanced diet. Vitamin C contributes to the normal function of the immune system. If you choose a supplement, follow the dose stated on the label. Our pharmacist can advise if you are unsure whether a supplement is right for you.
Can I take too much vitamin C? +
Yes. The HSE advises that taking more than 1,000mg of vitamin C a day can cause stomach pain, diarrhoea and flatulence. These symptoms usually settle once you stop taking the supplement. Do not exceed the dose stated on the label, and speak to our pharmacist before starting a high-strength product, particularly if you take other medicines.
Are gummy vitamins as effective as tablets? +
Gummies provide the amount of vitamin C stated on the pack, though this is often lower per serving than tablets, and they may contain sweeteners. Compare the amount per serving on the label rather than choosing by format. Keep all supplements out of the reach of children.