Best Immunity Booster Supplements 2021 – Boost Immune System Support

The immune system is your body’s natural first line of defense against dangerous germs and illnesses. A healthy immune system is a prerequisite for optimum health. Some people are born with robust immune systems. Others have healthy lifestyles and eat nutritious foods, which boost their natural immunity. Its body’s natural protection against illness, disease, and infection is your immune system. Diet and exercise can help your immune system function more effectively. Some people may take vitamins to help increase their immunity. Immunity boosters are pills that claim to support your immune system and reduce your chances of getting sick. Many people nowadays take supplements daily to keep their natural immunity. Vitamin C supplements, zinc, herbal and plant extracts, and other chemicals have all been shown to improve immune function in studies. There are hundreds of products on the market that claim to boost immunity. Unfortunately, many of them are ineffective.

How did we decide which immunity booster is best?

Immune function is claimed to be supported by every immune support substance. Some of the elements are tried and true. Others contain strange botanical extracts that have only a few scientific studies to back them up. We utilized the following criteria to distinguish between the best and worst immune support supplements:

Scientifically-Proven Ingredients

Significant scientific data support the use of zinc, vitamin C, probiotics, vitamin D, and elderberry extract. Supplements with scientifically validated components linked to immunity and immunological function were our favorites.

Effective Dosages

Some supplements contain dozens of components, yet none of the amounts are strong enough to affect immunity. Supplements with high, clinically established doses of all specified components were picked.

Honest Health Benefits

Supplements are only allowed to claim to support your health under FDA restrictions. Some immune supplements promote themselves as virtual cure-alls, claiming to treat diseases, prevent COVID-19, and bring a slew of other advantages. These are unsubstantiated and dishonest claims. We stayed away from supplements that made false claims.

Manufacturing Location

Immune support supplements made in licensed and certified institutions were selected. Some companies get their supplements from low-cost sources in other countries. Others rely on local facilities that have been approved by the Food and Drug Administration (FDA) and other national regulatory bodies. The greater the transparency in the production process, the better.

Medical Firm profile

With COVID on the rise, some companies have introduced immune support pills. As per standard practice, medical advisory boards are a must for any supplement manufacturing company. Firms without such advisory boards manufacture fake products. Also, such firms have a bad reputation as well. Supplements manufactured by such companies were omitted.

Ingredient Sources

Some immunity boosters contain uncommon mushroom extracts and other mixtures that aren’t seen in other supplements. Nutritional supplements with transparent and credible ingredient sources were our picks.

Price & Value

We provided a selection of immune booster supplements in various pricing ranges, emphasizing exceptional value at all prices.

The Best Immunity Boosters of 2021

Here are the best immunity boosters of 2021 ranked based on the factors given above.

VitaPost Immune Support


Immune Support from VitaPost nourishes your immune system with a variety of plant extracts. Beta-glucans, arabinogalactan, quercetin, green tea, vitamin C, vitamin E, and other modern and traditional components are included in the mix. Some of the substances enhance immunity by filling your body with antioxidants. Other substances operate by focusing on other areas of your immune system. It’s also one of the most acceptable value alternatives on our list, with a bottle costing less than $14.

Mushroom Defense


Mushroom extracts have been shown in studies to help with fatigue and cognitive deterioration. According to the creators, it is the best way to protect yourself against viral and bacterial threats while simultaneously boosting energy and cognition. Mushroom Defense includes Agaricus blazer, a rare mushroom extract from a mountain village outside of Sao Paulo, Brazil, that we don’t see in other mushroom supplements. Clinically investigated mushrooms like lion’s mane, turkey tail, reishi, shiitake, chaga, maitake, and cordyceps Sinensis are among the mushroom extracts in Mushroom Defense.

VitaPost Immune Complex


VitaPost’s Immune Complex shares many of the same qualities as Immune Support, such as proven components and a reasonable price, but it takes a different approach to immunity support. The formula differs from Immune Support in that it contains echinacea, elderberry, and probiotics. Echinacea, elderberry, and probiotics are three of nature’s most well-known immune-boosting substances. The gut holds up to 70% of your immune system, and the VitaPost Immune Complex promotes gut health.

Zenith Labs Nano C


Dr. Ryan Shelton of Zenith Labs has developed Nano C Immune Support, a vitamin C supplement. It provides a bioavailable form of vitamin C, similar to that found in a tincture. To support immunity, you take Nano C drops once a day, giving your body a large dosage of vitamin C. Nano C provides “nano” versions of vitamin C that are 1,000 times smaller than naturally occurring vitamin C. That means your body can absorb it more efficiently, allowing vitamin C to enter your bloodstream more rapidly and efficiently to power your immune cells. According to Dr. Shelton, Nano C will strengthen your immune system, improve absorption via nanotechnology, boost antibody synthesis, and aid in speedier recovery from viruses and bacterial infections, among other things.

Epishield Plus


Epishield Plus by Simple Promise is an all-natural supplement that claims to increase your immunity in just two hours. Vitamin C, vitamin D, and mushroom extract are among the constituents of this supplement, as are others on this list. Epishield Plus also contains fermented yeast, which isn’t found in many other supplements. Epishield Plus contains fermented yeast, which is said to aid in the maintenance of a strong and healthy immune system. Epishield Plus is a popular choice, with a price tag of $50 per bottle. EpiCor, a dry yeast fermentate made from Saccharomyces cerevisiae, is one of only two supplements on this list that contains it.

Advanced Bionutritionals Resistol


Advanced Bionutritionals promotes Resistol as a means to support a healthy immune system. Andrographis, eleuthero, Platycodon, prickly chaff flower, and licorice are among the five supporting herbs in the supplement. Vitamin C, vitamin D, and other common vitamins are abundant in the immune supplements listed below. Advanced Bionutritionals has adopted a unique approach, incorporating herbs and plant extracts not found in other supplements. Compared to the other selections on our list, it’s a good value at under $30 per bottle.

Organixx 7M


Organixx 7M contains mushroom extracts and other immune-boosting substances. Shiitake mushroom extract, reishi mushroom extract, and maitake mushroom extract are used in the mix. The beta-glucans in these mushroom extracts are said to have anti-inflammatory and antioxidant qualities. In addition to these three mushroom extracts, 7M also includes cordyceps, lion’s mane, and turkey tail mushroom extracts, all known for their potential to support immunological function. To promote inflammation, healthy digestion, and immunological function while protecting against aches and pains, Organixx recommends taking their supplement daily.

BioShield MD


BioShield MD is a supplement that can help with immunity, natural energy, joint health, mental health, and other things. Dr. Mark Rosenberg of SunCoast Sciences devised the recipe. BioShield MD comprises some of the most excellent and most proven substances for immunity at the correct dosages. BioShield MD emphasizes potent concentrations of sour cherry extract, cocoa extract, curcumin, resveratrol, quercetin, and green tea extract, among others, rather than overwhelming your body with dozens of chemicals at modest doses. BioShield MD’s components are high in antioxidants and flavonoids, which can help the immune system in various ways.

VitaPost Turmeric & Ginger


Turmeric & Ginger from VitaPost is a premium combination with BioPerine that floods your body with antioxidants to support a healthy immune system and joint health. You can harness the power of turmeric and ginger with VitaPost’s Turmeric & Ginger. Turmeric & Ginger by VitaPost offers 500mg of pure turmeric and 100mg of ginger in each capsule. To help with absorption, there’s also a 50mg dose of turmeric with 95 percent curcuminoids and 5mg of black pepper extract. VitaPost’s Turmeric & Ginger is one of the best accessible solutions if you’re searching for a no-nonsense turmeric and ginger supplement to promote immunity at a reasonable price.

Immuno Defense 4x


EpiCor, quercetin, bromelain, and vitamin D3 are the only four ingredients in JayLab Pro’s Immuno Defense 4x to support immunity. Immuno Defense 4x has concentrated on supplying high doses of a small number of substances rather than low amounts of a significant number. Each meal contains 500mg of EpiCor and 500mg of quercetin, high amounts of bromelain (150mg), and vitamin D3 (166 percent DV). Immuno Defense 4x is a cost-effective immune support supplement that costs less than $45 a bottle. The second supplement on this list contains EpiCor, a dried yeast extract that’s been examined for its immune-boosting properties.

Doctor G’s Naturals Q-Ion Immune Defense

One of the few supplements on our list that claims to be doctor-approved is Doctor G’s Q-Ion Immune Defense. Q-Ion Immune Defense’s creators say that their compound is a potent anti-inflammatory, allowing you to boost antiviral activity and immune health. The supplement also claims to protect you from germs that are harmful to your health. Dr. John Gordon, a board-certified physician, founded Doctor G’s Naturals, a supplement firm. Dr. Gordon added quercetin, zinc, bromelain, and green tea extract to his Q-Ion Immune Defense combination using his medical knowledge. The recipe also incorporates Ion-Blast Technology, which increases the bioavailability of the quercetin and zinc in the mix, helping your body absorb it more quickly and efficiently than usual.

Immunity 911


Immunity 911, according to PhytAge Labs, contains the most top immunity-boosting components, making it suitable for maintaining your body’s first line of protection against infection. Immunity 911 does have a wide range of features (20+ per capsule), but the dosages aren’t as high as some of the other supplements on this list – despite PhytAge Labs’ bold health claims. Immunity 911’s ingredients, according to PhytAge Labs, are guaranteed to work. Compared to the other supplements on this list, the supplement contains modest levels of vitamin C (33 percent DV) and vitamin E (133 percent DV). However, the patented formula contains high quantities of Graviola leaf extract, red raspberry fruit extract, and green tea leaf extract, as these are the first three ingredients. Given the absence of label clarity, it’s challenging to assess Immunity 911’s confident health claims. PhytAge Labs, on the other hand, is sure that their solution, which includes superfruits, herbs, and mushroom extracts, works.

Immunity Formulas Immune Support


Immunity Formulas Immunological Support is a blend of therapeutic-grade herbal essential oils that help various immune and viral issues. Immune Support will, among other things, strengthen your natural virus defense, raise your body’s immunity, sterilize all surfaces, and disinfect and purify the air. Take Immune Support daily to reap the benefits of essential oils. Lemon, oregano, peppermint, turmeric, and cinnamon essential oils are all critical in Immune Support. Immunity Formulas Immune Support, on the other hand, has the advantage of being able to be dispersed or applied topically to the skin.

Why should you go for Immunity Boosters?

A weakened immune system acts as an open door for viruses and germs. On the other hand, strong immunity acts as a barrier, preventing illnesses, speeding up healing, and protecting your body from pathogens and hazardous substances. Given how widespread viruses and bacterial infections have grown in recent years, you must maintain your immune system via such supplements.

Side Effects of Immunity Boosters

Most people are unlikely to encounter any adverse effects as the ingredients are all-natural.

After taking an immune booster for the first time, you may suffer indigestion, bloating, or slight stomach discomfort.

However, before taking any supplement, speak with your doctor, especially if you have a medical condition or are taking drugs.

Immunity Boosters in light of Science

People are looking to strengthen their disease defenses, especially with COVID-19 instances on the rise and cold and flu season well started.

Certain fruits, vitamins, minerals, herbs, and plant extracts have supported immunological function in studies. According to Fortune Business Insights, sales of immune health supplements are expected to increase from $16 billion in 2019 to $29 billion by 2027, owing in part to the pandemic.

You may boost your body’s natural defenses against illness, disease, and aging by consuming these substances daily. For overall health and wellness, your immune system is critical. That’s why so many people use immune-boosting vitamins regularly.

A decent diet, lots of sleep, and regular exercise, together with stress-relieving methods like meditation or yoga, according to experts, will get you started on the right path.

Keep in mind that the supplement market is unregulated. Even if a vitamin or plant has shown potential, the bottle you buy may contain too little or too much of the required component.

The majority of supplements have little to no research behind them. Furthermore, research suggests that getting your vitamins from meals rather than supplements is preferable.

Finally, there’s a lot of proof that immune support pills have scientific benefits. Multiple studies have demonstrated that the top immune support supplement elements, such as Vitamin C, Vitamin D, Probiotic, Elderberry, Zinc, and Protein, have been associated with immunity.

Vitamin C

Vitamin C protects your body from free radicals. Diseases and disorders are linked to free radicals. As per research, Vitamin C cannot prevent colds or respiratory infections, but it may lessen their duration.

Vitamin D

Vitamin D appears to impact numerous components of your immune system, promoting immunity in various ways. Vitamin D deficient people have lower immune function than those who acquire the necessary daily dose of vitamin D.


Zinc is essential for immunity, and studies show that taking zinc at the outset of symptoms helps reduce the duration of colds.


Probiotics help with intestinal health. Because 70% to 80% of your immune cells reside in your gut, promoting gut health can aid with immunity. Probiotics, according to one study, can shorten the duration of respiratory infections.


Elderberry is a traditional European treatment for boosting immunity. Elderberry, which is high in vitamin C, appears to shorten the duration of cold and flu symptoms. Elderberry has been shown in studies to be more effective than a placebo in helping people recover from colds.


Turmeric is high in curcuminoids, such as curcumin, which have anti-oxidant properties. Oxidation has been linked to sickness and illness in studies. Turmeric may aid with immunity by reducing inflammation and as per research, ingesting turmeric daily has tremendous impacts on some people.

Immune Booster FAQs:

Q: What is the mechanism of immunity?

A. A healthy body has an immune system that protects it from dangerous substances. There are several layers to your immunological response. Cough reflexes and tears are examples of the first layers, which serve as your body’s initial line of protection against viruses. A robust immune system effectively targets and eliminates foreign intruders from your body.

Q: What are antibodies, exactly?

A. Antibodies are proteins produced by the immune system to aid in the fight against infection. Antibodies are an essential component of the immune system. Antibodies are necessary for your body to fight sickness.

Q: Which vitamins are good for immunity?

A. Vitamin C, vitamin E, and vitamin D are three of the most well-known vitamins for boosting immunity.

Q: What is innate immunity?

A: Your body’s initial line of defense against viruses (external invaders) is innate immunity. The epidermis, mucous, and stomach acid all contribute to innate immunity. Some supplements claim to target innate immunity specifically.

Q: What is adaptive immunity?

A. Adaptive immunity, also known as acquired immunity, refers to the part of your immune system trained to identify a pathogen. This component of your immune system is controlled by your spleen, thymus, bone marrow, and lymph nodes. Antibodies are produced by these cells and organs in response to a pathogen danger.

Q: What foods are the most immune-boosting?

A. Some of the most refined foods for immunity are berries, dark chocolate, red grapes, leafy greens, turmeric, elderberry, and ginger. Foods with added sugars, junk food, fast food, foods with artificial trans fats, refined carbs (including white bread, spaghetti, pastries, cookies, and cakes), and processed meat are the worst foods for immunity.

Q: Is it necessary for me to reduce weight to boost my immunity?

A: Research shows that those who maintain a healthy weight have better immune systems than obese.

Q: What are the most effective techniques to boost my immune system?

A: Adopting a healthy lifestyle and eating habits is the best method to enhance your immune system. Strengthening your immune system can be as simple as eating a well-balanced diet and exercising regularly.

Q: What habits are detrimental to my immune system?

A: Smoking, poor diet and exercise habits, excessive alcohol intake, stress, destructive sleep patterns, and other unhealthy habits all contribute to a weakened immune system.

Q: What effect does aging have on immunity?

A: Your immune function tends to weaken with age. Immunity can, however, be influenced by diet, exercise, and lifestyle behaviors, independent of age.

Q: Is exercise beneficial or harmful to immunity?

A: Moderate exercise is beneficial to one’s immunity. However, frequent, severe activity can lower immunity if you don’t allow your body to recover.

Q: Are allergies an indicator of a weakened immune system?

A: Allergies are the result of an erroneous immunological response. Something innocent, such as pollen or a type of food, is mistakenly identified as a disease by your body. Your body responds by launching an immunological response against it, resulting in allergy symptoms.

Q: What effect do vaccines have on immunity?

A. Vaccines function by activating the immune system to create antibodies against an invading organism. Rather than infecting you with the disease, they train your body how to fight it. The majority of vaccinations target a specific pathogen component. You experience minimal to no symptoms if you are exposed to the infection at a later time.

The Best Immune Boosters in 2021 Conclusion

There’s no need to be concerned about adverse side effects when using one of the top immunity boosters. Such supplements are backed by research and have no dangerous substances, ensuring that it works efficiently. Immunity booster supplements promote immunity in various ways by combining vitamins, minerals, and herbal extracts. Many substances, including vitamin C, vitamin D, zinc, and echinacea, have been shown in studies to boost immunity. You can help your body protect itself against infections by supporting your natural immunity by taking the correct immune support supplement. In case of any issues, it is always better to consult your medic regarding it.

More Like This: Hepa Boost Reviews – Will HepaBOOST Improve Immunity Safely?

Affiliate Disclosure:

The links contained in this product review may result in a small commission if you opt to purchase the product recommended at no additional cost to you. This goes towards supporting our research and editorial team and please know we only recommend high quality products.


Please understand that any advice or guidelines revealed here are not even remotely a substitute for sound medical advice from a licensed healthcare provider. Make sure to consult with a professional physician before making any purchasing decision if you use medications or have concerns following the review details shared above. Individual results may vary as the statements made regarding these products have not been evaluated by the Food and Drug Administration. The efficacy of these products has not been confirmed by FDA-approved research. These products are not intended to diagnose, treat, cure or prevent any disease.

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