Immune Support Supplements
Discover our comprehensive range of immune boosters and supplements designed to support your body's natural immune defences. From vitamin C and zinc to probiotics and herbal formulations, find premium quality immune care products from trusted brands at Australia's leading health store.
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Sold out Natures Way Kids Smart Vitamin C + Zinc + D3 Chewables $13.95 Regular price $15.99 -
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Immune Support Supplements Information
Shop immune support supplements at Mr Vitamins. Your immune system needs vitamins and minerals such as vitamin C, vitamin D and zinc to work well.[1] Vitamin C, zinc, probiotics, echinacea, elderberry and olive leaf have all been studied for colds and mild infections of the nose, sinuses or throat.[7, 9, 11, 12, 15, 16] We stock them as tablets, capsules, powders, liquids, sprays and kids' formulas. Brands include Blackmores, Herbs of Gold, Ethical Nutrients, Kiwiherb, Thompsons and Caruso's. Our qualified naturopaths and nutritionists offer a free 10-minute consultation, so you can choose with expert advice. Want a closer look? Read our 10 Best Immune System Supplements in Australia guide.
Our immune range covers:
- Vitamin C supplements in tablets, chewables and powders, including non-acidic (buffered) forms
- Zinc supplements and zinc forte formulas with vitamin C
- Vitamin D supplements in capsules, drops and oral sprays
- Probiotic supplements for gut health and immune support
- Multivitamins that often combine vitamins A, C, D and E with zinc and selenium
- Herbal immune formulas with echinacea, elderberry and olive leaf
- Bee products such as manuka honey and propolis, plus herbal immune tonics
- Immune powders that mix into water or juice for an easy daily dose
- Children's immune care products in liquids, gummies, chewables and powders
- Liquid immune formulas and immune syrups if you prefer not to swallow tablets
| Type | Formats | Typical amount per serve | Typical price |
|---|---|---|---|
| Vitamin C | Tablets, chewables, powders | 250 mg to 1,200 mg | About $15 to $50 |
| Zinc | Tablets, capsules, liquids | 5 mg to 50 mg of zinc | About $18 to $40 |
| Vitamin D | Capsules, drops, sprays | 250 IU to 1,000 IU | About $11 to $48 |
| Probiotics | Capsules, powders, gummies | Billions of live bacteria | About $27 to $63 |
| Echinacea, elderberry, olive leaf | Liquids, tablets, capsules | Varies by extract | About $17 to $58 |
| Honey, propolis and tonics | Sprays, liquids, lozenges | Varies by product | About $11 to $80 |
| Kids' immune care | Liquids, powders, gummies | Child doses | About $15 to $48 |
Prices change often, so these are typical ranges for items in stock.
ALWAYS READ THE LABEL AND FOLLOW THE DIRECTIONS FOR USE.
Our Immune Support Supplements and How They Can Help
Shop immune supplements by type: vitamin C, zinc, vitamin D, probiotics, multivitamins, echinacea, elderberry, olive leaf, manuka honey, propolis, immune tonics, immune syrups and kids' immunity.
The benefits come from the labels of listed medicines (AUST L products) in our range. Pick the type that fits your goal and budget.
1. Vitamin C
Vitamin C helps your immune cells do their job. It also works as an antioxidant. Your body cannot make it, so you need some every day. Taken daily, it has been studied for making colds shorter and milder.[7, 8]
- What it does: helps maintain immune system health.
- For colds: taken regularly, some products, such as Natures Way Vitamin C 500mg, help make common cold symptoms milder and shorter.
- Prefer less acid? Try a buffered (non-acidic) form, such as Nutrivital Non-Acidic Vitamin C Complete.
2. Zinc
Zinc is a mineral your immune cells need to grow and send signals. It has been studied for treating colds.[9]
- What it does: supports immune system health, skin health and wound healing.
- For colds: combination products such as Ethical Nutrients Extra C Plus Zinc help reduce how long a common cold lasts.
3. Vitamin D
Vitamin D helps your body absorb calcium. Your skin makes it in sunlight, so your levels can dip in winter.[2]
- What it does: Blackmores Vitamin D3 1000iu, a one-a-day capsule, supports immune system health, healthy bones and muscle function.
4. Probiotics
Probiotics are live, friendly bacteria. Your gut and immune system work closely together. Probiotics have been studied for preventing colds and similar infections.[11]
- What they do: help maintain healthy immune system function, including in the gut.
- For colds: Blackmores Probiotics+ Immune Defence helps decrease how long a common cold lasts in adults.
- For kids: Blackmores Probiotics+ Kids Daily Health helps reduce how often children over 2 years of age catch a common cold.
5. Echinacea
Echinacea is a daisy-family herb with a long history of use for colds. It has been studied for both preventing and treating them, in adults and in children.[12, 13, 14]
- For colds: Blackmores Echinacea Forte helps decrease how long a common cold lasts and reduce how severe its symptoms are.
6. Elderberry
Black elderberry is a dark purple berry, often made into syrups, gummies and liquids. It has been studied for colds.[15] In Western herbal medicine, it is traditionally used to support healthy immune function. It is also traditionally used to relieve symptoms of mild upper respiratory tract infections (mild infections of the nose, sinuses or throat). Brauer Sambucus Black Elderberry Dry Cough is one example.
7. Olive Leaf
Olive leaf extract comes from the leaves of the olive tree. It has been studied for upper respiratory illness in young athletes.[16]
- For colds and sore throats: Carusos Olive Leaf One A Day helps reduce how long a common cold lasts. It also helps relieve the symptoms of a sore throat.
- Traditional use: Comvita Olive Leaf Extract Oral Liquid (Peppermint) is traditionally used in Western herbal medicine to maintain immune system health and relieve cough.
8. Honey, Propolis and Herbal Tonics
Bee products and herbal tonics come in sprays, liquids and lozenges.
- For a cough: Thompsons Manuka Honey Dry Cough Relief is traditionally used in Western herbal medicine to relieve a dry cough. It is also traditionally used to relieve cold symptoms such as a sore throat.
- For your mouth: Natural Life Propolis & Manuka Spray is traditionally used in Western herbal medicine to help relieve oral irritation.
- For a blocked nose: Blackmores Super Strength Horseradish Garlic + C is traditionally used in Western herbal medicine to relieve nasal congestion.
- Herbal tonics: Fusion Health Astra 8 Immune Tonic Liquid is traditionally used in Chinese medicine to support immune function. It is also traditionally used to reduce how often colds occur.
ALWAYS READ THE LABEL AND FOLLOW THE DIRECTIONS FOR USE.
Powders, Liquids and Options for Kids
Not a fan of tablets? You have plenty of choice.
- Powders: stir into water or juice. Some give a higher dose in one serve, so check the label.
- Liquids and syrups: easy if you struggle with tablets. Some herbal liquids contain alcohol, so check the label.
- Gummies and chewables: popular with children, but some contain sugar.
Shopping for the kids? Check the starting age on the label. Many products start at 2 years, and some, such as Brauer Baby And Kids Liquid Zinc, start at 1 year. Always use the child dose, and never give honey to babies under 12 months.[3]
Got a Cold? Supplements for Colds, Sore Throats and Coughs
Match the type to your symptoms, then check the benefit printed on the label:
| If you want to | Look for products labelled for this |
|---|---|
| Shorten a cold or ease its symptoms | Vitamin C (taken regularly), zinc, echinacea, olive leaf, some probiotics; elderberry (traditional use) |
| Catch fewer colds | Some probiotics and echinacea products; astragalus tonics (traditional use) |
| Soothe a sore throat | Olive leaf; throat sprays and honey-based syrups (some traditional use) |
| Ease a cough | Herbal cough liquids, some with honey, and olive leaf (traditional use) |
| Clear a blocked nose | Horseradish and garlic (traditional use) |
Flu is more than a bad cold. Fever, body aches and tiredness are common, and it can be serious.[4] Supplements do not prevent or treat flu. Products labelled for the symptoms of colds and flu are for symptom relief only. A flu vaccination is recommended every year for everyone aged 6 months and over.[5] Ask your doctor or pharmacist about it. See a doctor if your symptoms get worse or you find it hard to breathe.[6]
Food First: Natural Sources of Immune Vitamins and Minerals
Good food is the place to start. Vitamin and mineral supplements can help when your diet falls short. Adults are advised to eat 2 serves of fruit and 5 to 6 serves of vegetables a day. Only about 1 in 15 Australian adults eats enough vegetables.[20]
| Nutrient | Rich food sources | Amount in a typical serve |
|---|---|---|
| Vitamin C | Red capsicum, kiwifruit, broccoli, strawberries, oranges | 1 gold kiwifruit: about 86 mg. 1 orange: about 60 mg. |
| Zinc | Oysters, beef, lamb, pumpkin seeds, cashews | 6 oysters: about 16 mg. 100 g grilled lean rump steak: about 8 mg. |
| Vitamin D | Sunlight, vitamin D-enhanced mushrooms, canned salmon, eggs | 100 g vitamin D-enhanced mushrooms: about 24 micrograms. 1 egg: about 3 micrograms. |
| Vitamin A | Carrots, sweet potato, pumpkin, spinach | A 94 g piece of baked sweet potato: about 650 micrograms. |
| Selenium | Brazil nuts, tuna, eggs | 1 Brazil nut: about 63 micrograms. |
Figures are from the Australian Food Composition Database.[21]
- Sunlight: when the UV Index is 3 or above, a few minutes outdoors on most days is enough for most people. Sun protection is recommended at those times. In late autumn and winter in some southern parts of Australia, the UV Index drops below 3. Then spend time outdoors in the middle of the day with some skin uncovered.[2]
- Fermented foods: yoghurt, kefir, sauerkraut and kimchi contain live microbes, but they are not the same as probiotic supplements.[22]
Using Immune Supplements Safely
Use every supplement as the label directs. More is not always better, so add up the amounts in everything you take, including your multivitamin.
- Zinc: adults should not go over 40 mg a day from food and supplements combined.[23] Too much for a long time can lower your copper levels.[1] Some zinc products give 40 mg or more in one dose, so only use them on a health professional's advice.
- Vitamin C: very high doses can cause diarrhoea, nausea and stomach cramps.[1]
- Vitamin A: too much can cause birth defects. If you are pregnant or planning a pregnancy, ask your doctor first.[24]
- Andrographis: since 17 September 2026, it is no longer a permitted ingredient in listed (AUST L) medicines. The reason is the risk of severe allergic reactions, including anaphylaxis.[25] If you have a product that contains it, ask your pharmacist before using it.
- Allergies: propolis can cause allergic reactions, and royal jelly is not suitable for people with asthma or allergies.[24] Echinacea is in the daisy family, so take care if you are allergic to daisies.
- Medicines and pregnancy: garlic may interact with blood thinners and blood pressure medicines.[1] Many herbal products are not recommended in pregnancy, so ask your pharmacist.
How to Choose the Right Immune Supplement
Still deciding? Work through these six steps.
- Set your goal: do you want everyday support, or a short course when a cold starts?
- Read the benefit on the label: wording such as "helps reduce the duration of the common cold" tells you what a product can claim. "Traditionally used" means the benefit comes from a long history of use in a named tradition, such as Western herbal medicine. Scientific studies are not the basis for that claim.[26]
- Look for an AUST L number: it shows the product is a listed medicine. Listed medicines are lower risk, and the TGA does not assess each one before it is listed.[25]
- Check the details: pick a format you will enjoy taking. Add up the zinc, vitamin A and vitamin D across your products, and read the warnings.
- Compare value: work out the cost per day, not just the pack price.
- Ask us: ask in any of our stores, or book a consultation online.
Good food, sleep and regular activity come first, and our team is happy to help you choose what sits alongside them.
Why Buy Your Immune Supplements from Mr Vitamins
- Trusted since 1992, when our first store opened.
- Eight stores across Sydney, the Hunter region and the Sunshine Coast, with free Click & Collect.
- Qualified naturopaths and nutritionists in store and online, and a free 10-minute consultation with no obligation to buy.
- Free standard shipping on orders over $120 in NSW and the ACT, and over $150 in QLD, VIC, SA, TAS and WA. NT shipping is calculated at checkout.
- Our team aims for same-day dispatch of in-stock orders.
- Rated 4.7 stars from more than 3,200 customer reviews.
- The studies behind this page are referenced below and the listed medicines are named, so you can check both for yourself.
Explore more: read How Consistent Sleep Builds Immune Resilience, or browse our Natural Cold & Flu Vitamins & Supplements, Kids Immunity and Vitamins & Supplements ranges.
References
- National Institutes of Health Office of Dietary Supplements (2025) Dietary supplements for immune function and infectious diseases: fact sheet for consumers. Updated 10 March 2025. Available at: https://ods.od.nih.gov/factsheets/ImmuneFunction-Consumer/ (Accessed: 22 October 2026).
- Cancer Council Australia (n.d.) Vitamin D. Available at: https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/vitamin-d (Accessed: 22 October 2026).
- NSW Health (2026) Infant botulism fact sheet. Last updated 2 February 2026. Available at: https://www.health.nsw.gov.au/Infectious/factsheets/Pages/infant-botulism.aspx (Accessed: 22 October 2026).
- healthdirect Australia (2024) Is it a cold or the flu? (infographic). Last reviewed September 2024. Available at: https://www.healthdirect.gov.au/cold-or-flu-infographic (Accessed: 22 October 2026).
- Australian Technical Advisory Group on Immunisation (n.d.) 'All people aged ≥6 months are recommended to receive influenza vaccine every year', Australian Immunisation Handbook. Canberra: Australian Government Department of Health, Disability and Ageing. Available at: https://immunisationhandbook.health.gov.au/recommendations/all-people-aged-6-months-are-recommended-to-receive-influenza-vaccine-every-year (Accessed: 22 October 2026).
- healthdirect Australia (2026) Flu (influenza). Last reviewed February 2026. Available at: https://www.healthdirect.gov.au/flu (Accessed: 22 October 2026).
- Hemilä, H. and Chalker, E. (2013) 'Vitamin C for preventing and treating the common cold', Cochrane Database of Systematic Reviews, (1), CD000980. Available at: https://doi.org/10.1002/14651858.CD000980.pub4. Funding: not stated in the PubMed record.
- Hemilä, H. and Chalker, E. (2023) 'Vitamin C reduces the severity of common colds: a meta-analysis', BMC Public Health, 23(1), 2468. Available at: https://doi.org/10.1186/s12889-023-17229-8. Funding: no external funding; no competing interests declared.
- Nault, D., Machingo, T.A., Shipper, A.G., Antiporta, D.A., Hamel, C., Nourouzpour, S., Konstantinidis, M., Phillips, E., Lipski, E.A. and Wieland, L.S. (2024) 'Zinc for prevention and treatment of the common cold', Cochrane Database of Systematic Reviews, 5(5), CD014914. Available at: https://doi.org/10.1002/14651858.CD014914.pub2. Funding: one author reports US National Institutes of Health funding (R24 AT001293) to her institution for Cochrane Complementary Medicine; the review notes that most included trials had industry ties or did not report their funding.
- Jolliffe, D.A., Camargo, C.A. Jr, Sluyter, J.D. et al. (2025) 'Vitamin D supplementation to prevent acute respiratory infections: systematic review and meta-analysis of stratified aggregate data', The Lancet Diabetes and Endocrinology, 13(4), pp. 307-320. Available at: https://doi.org/10.1016/S2213-8587(24)00348-6. Funding: none declared. One author reports grants from supplement companies outside this work.
- Zhao, Y., Dong, B.R. and Hao, Q. (2022) 'Probiotics for preventing acute upper respiratory tract infections', Cochrane Database of Systematic Reviews, 8(8), CD006895. Available at: https://doi.org/10.1002/14651858.CD006895.pub4. Funding: not stated in the abstract; the authors declared no conflicts of interest.
- Karsch-Völk, M., Barrett, B., Kiefer, D., Bauer, R., Ardjomand-Woelkart, K. and Linde, K. (2014) 'Echinacea for preventing and treating the common cold', Cochrane Database of Systematic Reviews, (2), CD000530. Available at: https://doi.org/10.1002/14651858.CD000530.pub3. Funding: US National Institutes of Health (NCCIH) grants K24 AT006543 and T32 AT006956; four authors were involved in included trials and did not extract data from them.
- David, S. and Cunningham, R. (2019) 'Echinacea for the prevention and treatment of upper respiratory tract infections: a systematic review and meta-analysis', Complementary Therapies in Medicine, 44, pp. 18-26. Available at: https://doi.org/10.1016/j.ctim.2019.03.011. Funding: not reported in the abstract.
- Pham, T.P., Vu, T.M., Doan, P.M., Nguyen, T.T., Bui, T.T., Ha, T.H., Hoang, T.K., Taufani, I.P. and Ha, H.A. (2025) 'Efficacy and safety of Echinacea purpurea in treating upper respiratory infections and complications of otitis media in children: systematic review and meta-analysis', Clinical Nutrition ESPEN, 67, pp. 702-713. Available at: https://doi.org/10.1016/j.clnesp.2025.04.025. Funding: not stated in the abstract; the authors declare no competing interests.
- Wieland, L.S., Piechotta, V., Feinberg, T., Ludeman, E., Hutton, B., Kanji, S., Seely, D. and Garritty, C. (2021) 'Elderberry for prevention and treatment of viral respiratory illnesses: a systematic review', BMC Complementary Medicine and Therapies, 21(1), 112. Available at: https://doi.org/10.1186/s12906-021-03283-5. Funding: US National Institutes of Health grants R24 AT001293 (NCCIH) and UL1 TR001863 (NCATS). The air-traveller trial in the review was sponsored by an elderberry extract supplier (Iprona AG).
- Somerville, V., Moore, R. and Braakhuis, A. (2019) 'The effect of olive leaf extract on upper respiratory illness in high school athletes: a randomised control trial', Nutrients, 11(2), 358. Available at: https://doi.org/10.3390/nu11020358. Funding: University of Auckland Food and Health Programme Seeding Fund.
- Oduwole, O., Udoh, E.E., Oyo-Ita, A. and Meremikwu, M.M. (2018) 'Honey for acute cough in children', Cochrane Database of Systematic Reviews, 4(4), CD007094. Available at: https://doi.org/10.1002/14651858.CD007094.pub5. Funding: none stated for the review; the included trials were funded by drug makers, a university research centre, the Honey Board of Israel and the US National Honey Board, and one did not report funding. The authors declared no known conflicts of interest.
- Lissiman, E., Bhasale, A.L. and Cohen, M. (2014) 'Garlic for the common cold', Cochrane Database of Systematic Reviews, (11), CD006206. Available at: https://doi.org/10.1002/14651858.CD006206.pub4. Funding: not stated in the abstract; no conflicts of interest declared for this review.
- Su, G., Chen, X., Liu, Z., Yang, L., Zhang, L., Stålsby Lundborg, C., Wen, Z., Guo, X., Qin, X., Liang, J. and Liu, X. (2016) 'Oral Astragalus (Huang qi) for preventing frequent episodes of acute respiratory tract infection in children', Cochrane Database of Systematic Reviews, 12(12), CD011958. Available at: https://doi.org/10.1002/14651858.CD011958.pub2. Funding: not stated in the abstract; the authors declared no known conflicts of interest.
- Australian Bureau of Statistics (2023) Dietary behaviour, 2022. Released 15 December 2023. Available at: https://www.abs.gov.au/statistics/health/food-and-nutrition/dietary-behaviour/latest-release (Accessed: 22 October 2026).
- Food Standards Australia New Zealand (2025) Australian Food Composition Database, Release 3. Canberra: FSANZ. Available at: https://www.foodstandards.gov.au/science-data/food-nutrient-databases/afcd (Accessed: 22 October 2026).
- Marco, M.L., Sanders, M.E., Gänzle, M. et al. (2021) 'The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on fermented foods', Nature Reviews Gastroenterology and Hepatology, 18(3), pp. 196-208. Available at: https://doi.org/10.1038/s41575-020-00390-5. Funding: ISAPP, which is funded by member companies, paid the meeting costs; several authors declare industry interests.
- National Health and Medical Research Council (2006) Nutrient reference values for Australia and New Zealand: zinc. Canberra: NHMRC. Available at: https://www.eatforhealth.gov.au/sites/default/files/2022-04/n35-zinc_0.pdf (Accessed: 22 October 2026).
- Therapeutic Goods (Permissible Ingredients) Determination (No. 3) 2026 (Cth) F2026L01382. Available at: https://www.legislation.gov.au/F2026L01382/asmade (Accessed: 22 October 2026).
- Therapeutic Goods (Permissible Ingredients) Amendment (Removal of Andrographis Paniculata) Determination 2026 (Cth) F2026L01211, and Explanatory Statement. Available at: https://www.legislation.gov.au/F2026L01211/asmade (Accessed: 22 October 2026).
- Therapeutic Goods (Permissible Indications) Determination (No. 1) 2025 (Cth) F2025L00450. Available at: https://www.legislation.gov.au/F2025L00450/asmade (Accessed: 22 October 2026).
Frequently Asked Questions
What are the best supplements for immune system support?
Key immune-supporting nutrients include vitamin C, vitamin D, zinc, and probiotics. A quality multivitamin can also provide comprehensive immune support. Consult with our qualified practitioners to find the best option for your needs.
How can I boost my immune system naturally?
Alongside supplements, support your immune system by consuming immune-boosting foods, maintaining regular exercise, getting adequate sleep, and managing stress levels. Our range includes natural options like honey and herbal formulations.
Are immune boosters safe for daily use?
Most immune supplements are designed for daily use. However, it's important to follow recommended dosages and consult healthcare professionals, especially when using multiple supplements together.
Can children take immune boosters?
Yes, we offer specially formulated immune care products for children. These include kid-friendly formats like chewables, liquids, and powders designed to support growing immune systems safely.
When is the best time to take immune supplements?
Timing can vary depending on the specific supplement type. Fat-soluble vitamins (like vitamin D) are best absorbed when taken with meals containing healthy fats. Water-soluble vitamins (such as vitamin C) can be taken on an empty stomach. Zinc supplements are often better absorbed when taken between meals, while probiotics are typically most effective when taken first thing in the morning or before bed.