Our "No Return Necessary"
Money-Back Guarantee

If you don’t like something of ours, guess what happens next?

No, we don’t request you deliver it to a PO box in the Gobi Desert by carrier pigeon. Nor do we ask you to fill a cursed inkwell with orc’s blood and demon saliva and then use it to complete reams of return forms written in ancient Cyrillic script.

We just . . . wait for it . . . give you your money back. Holy moo cows. And that means you can say "yes" now and decide later.

Is Immune clinically proven to alleviate and even eliminate respiratory illness?

No.

Will it supercharge your immune system and make you virtually impervious to bacteria and viruses?

Absolutely not.

But will it support immune health and function and enhance recovery?

Yes. Or your money back.

  • No proprietary blends or hidden ingredients[8] This means you know exactly what’s in every serving of Immune—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.
  • Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected facilities that adhere to Current Good Manufacturing Practice standards
  • Backed by our “No Return Necessary” money-back guarantee that works like this: If you don’t absolutely love Immune, just let us know, and we’ll give you a full refund on the spot. No forms or return necessary.

So order now, try Immune risk free, and see for yourself why we believe it’s the perfect natural immune supplement (that has sold over 10,000 bottles and counting!).

Is Immune clinically proven to alleviate and even eliminate respiratory illness?

No.

Will it supercharge your immune system and make you virtually impervious to bacteria and viruses?

Absolutely not.

But is Immune the only[1] Some popular immunity supplements are natural. Some contain high-quality ingredients. Some provide clinically effective doses. But only Immune checks each of these boxes. natural[2] Immune doesn’t just “contain natural ingredients''—every ingredient is naturally sourced. Immune contains no artificial or synthetic substances of any kind. immune support supplement with clinically effective doses[3] Every serving of Immune contains 3,776 milligrams of active ingredients that have been shown to be safe and effective in peer-reviewed scientific research. of 6 ingredients scientifically shown[4] Each active ingredient in Immune is backed by published scientific studies that show benefits in healthy humans. to support immune health and function and enhance recovery?

And will it help you get sick less often and feel better and recover faster when you do get sick?

Yes. Or your money back.

  • 33 peer-reviewed scientific studies support Immune’s combination of ingredients and doses[5] That’s 400 pages of scientific research that shows Immune works exactly like we say it does.
  • No artificial food dyes, fillers, or other unnecessary junk[6] While these types of chemicals may not be as dangerous as some people claim, studies suggest that regular consumption of them may indeed be harmful to our health. And that’s why you won’t find them in Immune.
  • No proprietary blends or hidden ingredients[7] Every bottle of Immune is guaranteed to provide exactly what the label claims and nothing else—no heavy metals, microbes, allergens, or other contaminants.
  • Analyzed for purity and potency in a state-of-the-art ISO 17025 accredited third-party lab[8] This means you know exactly what’s in every serving of Immune—every dose of every ingredient—and can verify the accuracy and efficacy of the formulation.
  • Made in the USA with globally sourced ingredients in NSF-certified and FDA-inspected facilities that adhere to Current Good Manufacturing Practice standards

Immune is also backed by our “No Return Necessary” money-back guarantee that works like this:

If you don’t absolutely love Immune, just let us know, and we’ll give you a full refund on the spot. No forms or return necessary.

So order now, try Immune risk free, and see for yourself why we believe it’s the perfect immune supplement (that has sold over 10,000 bottles and counting!).

Notice to California Consumers

WARNING: Consuming this product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.

Legion Immune Ingredients (3,776 milligrams per serving)

Tinofend® Tinospora Cordifolia (900 milligrams per serving)

Tinospora cordifolia (also known as guduchi and amrit) is a shrub native to India that has been used in Ayurvedic medicine for centuries.

It contains molecules known as polysaccharides and terpenoids that increase the killing capacity of macrophages, which are cells that help destroy harmful bacteria.[9][10]

The clinically effective dose of Tinospora cordifolia is 900 milligrams.

Tinospora Cordifolia

Panax Quinquefolius (900 milligrams per serving)

Panax quinquefolius (also known as American ginseng and North American ginseng) is an herb that grows mainly in North America and China and has long been used in traditional Chinese medicine.

It contains molecules known as saccharides that stimulate the immune system, improving its ability to fight off harmful invaders.[11][12][13]

The clinically effective dose of Panax quinquefolius is between 400 and 1,125 milligrams.

KaempMax® Thai Ginseng

Pelargonium Sidoides (800 milligrams per serving)

Pelargonium sidoides (also known as African geranium and black geranium) is an herb long used in traditional South African medicine.

It contains several molecules, including umckalin and related substances, that prevent bacteria from adhering to cells, making it harder for them to affect you.[14]

The clinically effective dose of Pelargonium sidoides is around 800 milligrams of the raw plant.

Pelargonium Sidoides

Aged Garlic Extract (900 milligrams per serving)

Aged garlic extract is a substance made from garlic that has been aged for several weeks or months to reduce odor and enhance nutritional properties.

That’s why research shows that supplementation with aged garlic extract improves vitality and well-being.[15]

Studies also show that supplementation with aged garlic extract provides other benefits, including increased activity of the antioxidant enzyme glutathione, which reduces oxidative stress in cells.[16]

The clinically effective dose of aged garlic extract is between 600 and 1,200 milligrams.

Aged Garlic Extract

Zinc (6 milligrams per serving)

Zinc is a mineral used to create enzymes, proteins, and cells, release vitamin A from the liver, and regulate immune function.

It aids the immune system by enhancing the development and function of several types of cells that are vital to its operations.

The clinically effective dose of zinc for the purposes of preventing a deficiency is 8 to 11 milligrams per day.

We chose to include a small amount of zinc per serving, however, for two reasons:

  1. It would prevent people from being able to take it alongside our multivitamin, Triumph which contains 30 milligrams of zinc per serving.
  2. The studies demonstrating zinc’s effectiveness used lozenges, and we can’t be sure oral supplementation would be equally effective.[17]
Zinc

Vitamin C (270 milligrams per serving)

Vitamin C is an antioxidant that helps maintain healthy tissues, teeth, and gums, and boost immune function.

It aids the immune system by assisting with the development and function of several types of cells that are vital to its operations.

The recommended daily allowance (RDA) for vitamin C is 90 mg per day for adult men and 75 mg per day for women who aren’t pregnant or breastfeeding.

That said, it’s possible there might be additional benefits to consuming more vitamin C than the RDA, and there’s no downside to doing so (excess vitamin C is harmlessly excreted in urine, and your body retains only what it can use). Thus, Immune contains 270 mg of vitamin C, as this is guaranteed to meet your daily requirements and possibly enjoy the additional benefits associated with higher levels of intake.

Vitamin C

No Artificial Food Dyes, Fillers, or Other Unnecessary Junk

Artificial food dyes aren’t a hazard per se, but studies show they can cause negative effects in some people, including gastrointestinal toxicity and behavioral disorders.[18][19][20][21][22]

No Artificial Food Dyes or Other Chemical Junk

Third-Party Lab Tested for Potency & Purity

Every bottle of Immune is analyzed in a state-of-the-art ISO 17025 accredited lab to verify what is and isn’t in it. That way, you know exactly what you’re getting and putting into your body.

Third-Party Lab Tested for Potency & Purity
Immune Lab Test Certificate of Analysis

The #1 brand of natural sports supplements.

5+ million bottles sold to 1+ million customers who have left us 45,000+ 5-star reviews.

Natural Ingredients
Natural Ingredients

Immune doesn’t just “contain natural ingredients”—every ingredient is naturally sourced. We don’t use artificial or synthetic substances of any kind.

Science-Backed Ingredients
Science-Backed Ingredients

Every ingredient in Immune is backed by peer-reviewed scientific research demonstrating clear benefits in healthy humans.

Clinically Effective Doses
Clinically Effective Ingredients & Doses

Every ingredient in Immune is included at clinically effective levels, which are the exact amounts shown to be safe and effective in peer-reviewed scientific research.

Lab Tested
Third-Party Lab Tested

Immune is tested by third-party labs for heavy metals, microbes, allergens, and other contaminants to ensure it meets FDA purity standards.

Made in USA
Made in the USA

Immune is made in America with globally sourced ingredients in NSF-certified, FDA-inspected facilities that adhere to Current Good Manufacturing Practice (cGMP) standards.

100% Money-Back-Guarantee
"No Return Necessary"
Money-Back Guarantee

If you don't absolutely love Immune, you get a prompt and courteous refund. No forms or returns necessary.

Trusted by scientists, doctors, and everyday fitness folk alike.

Previous
  • Dr. Bill Campbell, PhD

    "Legion is science-based at its core. Not only do they dose all of their products based on the clinical doses proven to be effective by scientific studies, they go above and beyond the their competitors by funding new research."

    Dr. Bill Campbell, PhD

    Professor of Exercise Science at University of South Florida
  • Dr. Spencer Nadolsky, MD

    "There are a lot of sleazy supplement companies out there, but Legion is not one of them. Their products are free of fillers and inactive ingredients and they take the time (and money) to test them with independent labs to ensure you're getting what you pay for."

    Dr. Spencer Nadolsky, MD

    Board-Certified Family Medicine Physician and a Diplomate of the American Board of Obesity Medicine
  • Sal Di Stefano, Justin Andrews, and Adam Schafer

    "When it comes to quality and integrity, Legion is among the best. Their products only include ingredients that are backed by research and in doses that are proven to be effective in scientific studies."

    Sal Di Stefano, Justin Andrews, and Adam Schafer

    Hosts of The Mind Pump Podcast
  • Jordan Syatt

    "Legion is a tremendous company run by people I trust and respect. The quality of their supplements is second to no one. And while I don’t use many supplements, the only ones I do come from Legion."

    Jordan Syatt

    Strength and Nutrition Coach
  • Menno Henselmans, MS

    "Legion consults with nutrition experts to make honest, science-based products and then proves they're genuine with independent lab work. That's how all supplement companies should operate."

    Menno Henselmans, MS

    Founder of Bayesian Bodybuilding, Published Scientist, and Physique Coach
  • Sports Illustrated Sports Illustrated

    "Legion's customers are getting some of the best sports supplements on the market."

  • Healthline Healthline

    "Legion Pulse is the best overall pre-workout, especially for energy and focus."

  • Forbes Health Forbes Health

    "Legion Pulse is the best pre-workout of 2024."

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Frequently Asked Questions

How do I use Immune?
Can Immune help even if I have an unhealthy lifestyle (chronic stress, lack of sleep, a poor diet, lack of exercise, and/or poor hygiene)?
Does Immune need to be taken with food?
Can I take Immune while pregnant or breastfeeding?
Why doesn’t Immune contain echinacea?
Is Immune homeopathic?
Should I take Immune every day?
Why doesn’t Immune contain elderberry?
Why doesn’t Immune contain B vitamins?
Why doesn’t Immune contain vitamin E?
Can I take Immune after working out?
Are there any conflicting ingredients with other Legion supplements? Can I take Immune at the same time as other supplements?
Are there any side-effects I should know about?
Immune is kind of expensive. Why should I buy it over cheaper alternatives?
How big are the pills?
What does the Prop65 warning on the labels mean?
Is Immune gluten-free? Soy-free? Dairy-free?
Is Immune vegetarian-friendly?
Is Immune vegan-friendly?

+References

9. Can We Do Away With PTBD?

Bapat RD, Koti RS, Rege NN, Desai NK, Dahanukar SA. HPB Surg. 1995;9(1):5-11. doi:10.1155/1995/90362.

12. Identification of immunomodulatory signatures induced by American ginseng in murine immune cells.

Yan J, Ma Y, Zhao F, Gu W, Jiao Y. Evidence-based Complement Altern Med. 2013;2013. doi:10.1155/2013/972814.

13. Characterization and immunostimulating effects on murine peritoneal macrophages of a novel protein isolated from Panax quinquefolius L.

Qi B, Wang S, Wang Q, et al. J Ethnopharmacol. 2016;193:700-705. doi:10.1016/j.jep.2016.10.034.

14. Evaluation of an aqueous-ethanolic extract from Pelargonium sidoides (EPs® 7630) for its activity against group A-streptococci adhesion to human HEp-2 epithelial cells.

Janecki A, Conrad A, Engels I, Frank U, Kolodziej H. J Ethnopharmacol. 2011;133(1):147-152. doi:10.1016/j.jep.2010.09.018.

15. Supplementation with aged garlic extract improves both NK and γδ-T cell function and reduces the severity of cold and flu symptoms: A randomized, double-blind, placebo-controlled nutrition intervention.

Nantz MP, Rowe CA, Muller CE, Creasy RA, Stanilka JM, Percival SS. Clin Nutr. 2012;31(3):337-344. doi:10.1016/j.clnu.2011.11.019.

16. Supplementation with aged garlic extract improves both NK and γδ-T cell function and reduces the severity of cold and flu symptoms: A randomized, double-blind, placebo-controlled nutrition intervention.

Nantz MP, Rowe CA, Muller CE, Creasy RA, Stanilka JM, Percival SS. Clin Nutr. 2012;31(3):337-344. doi:10.1016/j.clnu.2011.11.019.

17. Relation between serum zinc levels and recurrent urinary tract infections in female patients: A case-control study.

Mohsenpour B, Ahmadi A, Mohammadi Baneh A, et al. Med J Islam Repub Iran. 2019;33:33. doi:10.34171/mjiri.33.33.

18. Zinc for the common cold. In: Singh M, ed. Cochrane Database of Systematic Reviews.

Singh M, Das RR. Chichester, UK: John Wiley & Sons, Ltd; 2011. doi:10.1002/14651858.CD001364.pub3.

19. Zinc lozenges and the common cold: a meta-analysis comparing zinc acetate and zinc gluconate, and the role of zinc dosage.

Hemilä H. JRSM Open. 2017;8(5):205427041769429. doi:10.1177/2054270417694291.

20. Vitamin C for preventing and treating the common cold.

Douglas RM, Hemilä H, Chalker E, Treacy B. Cochrane Database Syst Rev. 2007;(3). doi:10.1002/14651858.CD000980.pub3.

21. Toxicological significance of azo dye metabolism by human intestinal microbiota.

Feng J, Cerniglia CE, Chen H. Division of Microbiology, National Center for Toxicological Research, US Food and Drug Administration, AR , USA. Front Biosci (Elite Ed). 2012 Jan 1;4:568-86.

22. Artificial food dyes and attention deficit hyperactivity disorder.

Kanarek RB. Department of Psychology, Tufts University, Medford, Massachusetts, USA. Nutr Rev. 2011 Jul;69(7):385-91.

23. Meta-analysis of attention-deficit/hyperactivity disorder or attention-deficit/hyperactivity disorder symptoms, restriction diet, and synthetic food color additives.

Nigg JT, Lewis K, Edinger T, Falk M. Oregon Health and Science University, Portland, OR, USA. J Am Acad Child Adolesc Psychiatry. 2012 Jan;51(1):86-97.e8.

24. Food additives and hyperactive behaviour in 3-year-old and 8/9-year-old children in the community: a randomised, double-blinded, placebo-controlled trial.

McCann D, Barrett A, Cooper A, Crumpler D, Dalen L, Grimshaw K, Kitchin E, Lok K, Porteous L, Prince E, Sonuga-Barke E, Warner JO, Stevenson J. School of Psychology, Department of Child Health, University of Southampton, Southampton, UK. Lancet. 2007 Nov 3;370(9598):1560-7.

25. Effect of food azo dye tartrazine on learning and memory functions in mice and rats, and the possible mechanisms involved.

Gao Y, Li C, Shen J, Yin H, An X, Jin H. Scientific and Technological College of Chemistry and Biology, Yantai Univ., Yantai, PR China. J Food Sci. 2011 Aug;76(6):T125-9.