5 Best Immune System Support Supplements to boost your Immunity

Our immune system is a process of checks and balances that are needed to protect our bodies from ailments.

While it’s possible to boost one’s immune system naturally, having immune booster pills would make it easier than you probably think.

With low immunity, you will experience the below symptoms but not limited to:

  • Delay in growth development
  • Fatigue
  • Fever such that you will be prone to colds
  • Frequent infections
  • Unexplained weight change


Our immune system is the key to good health; we can protect it better with immunity-boosting vitamins and supplements. 

Though many products claim to boost the immune system, they should be approached with caution.

To make work easier, I have adequately researched the 5 best immune support supplements, and here is my list:

  1.  Optimunity: Liposomal Vitamin C Supplement
  2. Dr.Mercola: Liposomal Vitamin C
  3. MegaFood- Immune Defense
  4. Immune Defense: Swiss Research Labs
  5. Super Wellness Immune Booster

5 Best Immune System Boosting Supplement

#1. Optimunity: Liposomal Vitamin C Supplement


  • Dietary supplement with vegetable capsules
  •  180 capsules – 90 Days Serving
  • Contains 1500mg per serving

What is Optimunity Liposomal Vitamin C?

Optimunity Benefits

Optimunity liposomal vitamin C is a premium supplement that effectively boosts the immune system. It’s one of the best immune support supplements with a natural groundbreaking high potency.

Good news: Anybody who wants to be safe from infectious diseases such as cold or flu has the answer with this product.

How Can I Benefit from Optimunity?

Do you seem to catch a cold while your friends are sailing through winter unharmed?

You need to think about ways to strengthen your immune system.

This can be possible with Optimunity – Liposomal Vitamin C.

Here is how the product can benefit you.

  • Helps the body to fight off disease-causing microorganisms
  • Improves immune system and health heart due to the presence of Vitamin C
  • It helps to fight off infections of all seasons, such as cold and flu.
  • It acts as a natural antioxidant: This strengthens almost all parts of the body including, lungs, muscles, eyes, and also the artery function.

Though this product has the above benefits, the user needs to eat the right diet and exercise regularly for optimal results.

How Does Optimunity-Liposomal Vitamin C Works to Boost Immunity?

How this supplement works is a significant concern to those looking forward to buying natural immune boosters.

As a matter of fact, the immune system is the natural way of your body to defend itself from diseases or infections.

It performs an intricate network with the body’s vital organs, tissues, and cells to fight invaders.

So, What are these invaders?

These include bacteria, parasites, viruses, or anything that can potentially make the body sick.

No worry about side effects or its efficacy

This Liposomal vitamin C supplement has been manufactured in an FDA facility with thorough safety measurements. 

What Are the Ingredients in Optimunity Liposomal Vitamin C?

  • The main ingredient is Vitamin C (fat-soluble) 1500mg
  • Proprietary Liposomal Vitamin C Complex
  • Sunflower Lecithin
  • Phosphatidylcholine
  • Cetyl Ascorbate
  • Ascorbyl Oleate
  • Ascorbyl Palmitate

Other ingredients include

  • Vegetable cellulose 

Every ingredient is tested to ensure its delivers results

With the above ingredients, any individual who gets sick quickly can benefit from its ability to build resistance and boost the immune system.


Those who take a long time to heal cuts or wounds have the answer with Optimunity being one of the best vitamin C supplements.

 How To Use Optimunity Liposomal Vitamin C?

Some people ask, can I take this liposomal vitamin C supplement on an empty stomach?

The answer is,

If the user takes products that contain Vitamin C in the evening, this may cause too much energy to be released in the body.

This could interfere with the individual’s regular sleeping schedule

According to the manufacturer, Only 2 capsules of the Optimunity Liposomal Vitamin C should be taken daily with water. The pills should be taken on an empty stomach.

This helps in absorption as the supplement can penetrate the bloodstream quicker.

Pregnant or breastfeeding mothers should ensure to seek advice from a medical doctor before taking the supplements.

If you’re looking for the best immune booster pills that don’t cause stomach upsets, Optimunity is one of them.

 Where To Buy Optimunity Immunity Booster

This product can only be purchased from its official website and Amazon


#2. Dr.Mercola Liposomal Vitamin C Supplement


  • Dietary supplement
  • 60 capsules
  • 1000mg per serving

What is Dr.Mercola Liposomal Vitamin C?

Dr. Mercola is a non-GMO liposomal vitamin C supplement that boosts your immune system naturally.

It contains the right dosage of vitamin C.

And as we all know, Vitamin C is one of the best immune systems boosting vitamins that is used to improve the health and wellness of individuals.

As the name suggests, Dr. Mercola is a renowned doctor who provides the best quality of health products.

According to the supplement’s manufacturer, Dr.Mercola liposomal vitamin C has many benefits to the user.

Here they are!


  • It’s very effective compared to the oral traditional vitamin C since it helps to reduce the potential gastrointestinal distress.
  • The supplements are tested to ensure safety and quality
  • Contains sunflower lecithin emulsifier
  • Contains phospholipids that help in forming liposomes in the stomach
  • Produced by a world-leading health product manufacturer who provided the best quality products with great innovative technology
  • Have a higher bioavailability compared to the traditional oral vitamin C
  • Contains tightly-sealed Licaps to ensure Vitamin C is delivered in its high-quality

More to this

Dr. Mercola products have a 90-day money-back guarantee to ensure any consumer who is not satisfied with the product returns it.

The fact is:

Vitamin C has so many potential benefits to our immune system. Studies have backed this. A study as U.S National Library of Medicine shows that vitamin C donates electrons that act as an immune defense.

Another significant advantage is that it helps in the synthesis of collagen and also helps to reduce pigmentation and wrinkles.


 With all these benefits, we also need to know whether there are any side effects associated with taking Dr. Mercola liposomal Vitamin C supplements.

Can Dr. Mercola Vitamin C Supplements Cause Side Effects?

Dr.Mercola supplements contain no side effects.

 However, according to WebMD, taking more than 2000 mg daily of any vitamin C supplements may be unsafe and thus cause side effects.

How Does Dr. Mercola Vitamin C Supplements Work?

These capsules are known for their ability to increase the bioavailability of Vitamin C in the body.

The body can’t be able to absorb soluble vitamin C well. Therefore, the Vitamin easily helps to ease the intestinal discomfort associated with a high amount of this supplement.

Daily intake of Vitamin C is recommended since your body can’t produce or store.

What Are The Ingredients In Dr.Mercola Liposomal Vitamin C Supplements

The main ingredient contained in this product is Vitamin C with 1000mg amount per serving

Other ingredients include:

  • Sunflower Lecithin
  • Medium Chain Triglycerides
  • Beeswax
  • Paprika Extract
  • Capsule ( Hydroxypropyl Methylcellulose)

The above ingredients have been scientifically proven to help in the supplementation of Vitamin C.

How Should I Take Dr. Mercola Vitamin C Capsules?

Any adult should take 2 capsules of the dietary supplement daily with water.

According to the manufacturer, any nursing, pregnant woman, or anyone taking any other medication should first consult their doctors before taking this product.

 Where To Buy Dr. Mercola Capsules

Dr. Mercola liposomal vitamin C can be purchased from https://shop.mercola.com/

The product is also available at Amazon and other recognized local stores such as Walmart

  • For a 30-day supply, the price is $ 14.97
  • For a 90-day supply, the price is $36.97

#3. MegaFood – Immune Defense


  • Dietary supplement
  • 15 capsules per serving

What Is Mega Food Immune Defense?

Mega Food Immune Defense is one of the best non-GMO immune booster pills used to boost the body’s immune system naturally.

 It’s important to boost immune since many ailments or infections result from a weak immune system.

Immune defense from MegaFood is made with real foods from trusted farm partners.

What Are The Benefits Of MegaFood Immune Defense Supplements?

  • Fuels the immune system due to great nutrients such as zinc and vitamin C. Vitamin C and zinc are also known to improve immunity in children.
  • It’s fresh from the farm to tablet natural immune boosters
  • Maintains body wellness: The supplements are made from real food, and as such it delivers guaranteed potency
  • Guaranteed money back: If the customer is not satisfied, he/she can return the product for a refund.

How Does MegaFood Immune Defense Work?

It’s simple!

MegaFood immune defense simply works to provide the body with the nourishment it needs to support the immune system.

This is all possible due to the product’s ingredients that are carefully selected to help the immune system booster.

MegaFood Immune Defense Ingredients

  • Vitamin C (Ascorbic acid with oranges)-250 mg

Vitamin C is an essential micronutrient needed by the human body. It constitutes the immune defense as it supports various cellular functions.

It also protects the body from pathogens and against environmental oxidative stress.

  • Zinc (mineral bound S. cerevisiae)-5mg

Zinc is vital for the normal development and function of the cells.

Some studies show that it supports the immune system and also functions as an antioxidant.

  • Elderberry Fruit (Sambucus nigra)-600 mg          

The fruit is packed with antioxidants and vitamins that help to boost the immune system. Besides, it also lessens stress and helps to prevent cold and flu symptoms.

  • Echinacea Aerial Plant Extract (Echinacea purpurea) -500 mg     

Echinacea acts as a defense against germs to strengthen the immune system.

  • Andrographis Extract (Andrographis paniculata) 100mg

Andrographis is an herb used for Chinese medicine. The extract is known to act as a natural immune booster. 

It also has antioxidant properties.

Other ingredients include

Cellulose, silica, stearic acid

How To Use MegaFood Immune Defense

 According to the manufacturer’s instructions, the user should take 2 tables 3 times a day. This should be done for 5 days.

 The product should be taken any time of the day even on an empty stomach


To the breastfeeding and pregnant women, the immune booster pills should only be taken after the doctor’s consultation.

Where To Buy MegaFood Immune Defense

The product can be purchased from https://www.megafood.com/

Any prospective buyer can also check the product from Amazon, Walmart, or any other local store.

The price per bottle is $14.98

#4. Super Wellness Immune Booster


  • Dietary supplement
  • 60 capsules
  • 1542 mg per serving

What is Super Wellness Immune Booster?

Super Wellness is one of the best immune boosters designed to support the immune system.

It’s a product from Vitalitenow.

Super Wellness is a safe product since it’s made from an FDA approved facility

It’s 100% natural and free from GMO

If everyone around you is getting sick, you don’t have to worry about being infected, use Super Wellness as your immune help.

What Benefits Can I Achieve With Super Wellness Immune Booster

  • Strengthens the immune system and helps keep illnesses at bay
  • It has antioxidant support that helps the brain, heart, and other vital organs in the body to have the right immune support.  This also helps to preserve the state of wellness in the body.
  • Contains safe ingredients that help to fight off free radicals that may cause the body immune to be weak
  • Super Wellness contains mushrooms that have anti-aging support

How Does Super Wellness Work?

The product contains natural ingredients that do a remarkable job in defending the body’s immune system.

While there are many products over the counter which promises to boost the immune system, not all are safe.

Those who want to go natural should choose Super Wellness immune booster

The product can quickly jumpstart your immune system.

 What Are The Ingredients In Super Wellness Immune Booster Supplements?

  • Vitamin E 30 IU
  • Vitamin C 30 mg
  • Graviola leaf powder 300 mg
  • Selenium 20 mcg
  • Raspberry fruit powder 200 mg
  • Green tea leaf 200 mg
  • Turmeric rhizome powder 100 mg
  • Beta-glucan powder 100 mg
  • Pine bark 100 mg
  • Grapeseed 100 mg
  • Panax ginseng root powder 20 mg
  • Lycopene 10% 2 mg
  • Quercetin 50 mg
  • Herbal complex with, sheep sorrel powder, burdock root powder, slippery elm bark powder  and rhubarb root powder 100 mg
  • Mushroom complex with reishi powder, maitake powder, shiitake powder 80 mg
  • Pomegranate 50 mg
  • Cat’s claw bark powder 20 mg
  • Garlic bulb powder 20 mg
  • Arabinogalactan 20 mg
  • Olive leaf 20 mg


The above ingredients have been tested to ensure they deliver the required results within the stipulated time to the user.

Don’t forget about the mushroom blend!

Mushrooms are original foods, and any adult can use to support their natural immunity without too much hustle.


For those who are allergic to soy, the product should be avoided

How To Use Super Wellness Immune Booster

According to the manufacturer, the user should take 2 capsules per day.

Where To Buy Super Wellness Immune Booster

The user can purchase the product from https://www.vitalitenow.com/products/super-immune-support

1 bottle goes for $23.90

If the user buys and the product doesn’t deliver, there is a 100% money-back guarantee

Super Wellness immune booster has an advanced treatment formula.

 It’s a top-quality product that delivers what it promises.

#5. Immune Defence: Swiss Research Labs


  • Food supplement
  • 120 Lozenges

Immune Defence is a natural immune booster that provides the body with a daily dose of various vitamins and zinc.

It has the capability of leveling up the immune system to help the user stay healthy without being prone to every infection that comes along.

How Can I Benefit From Immune Defence Supplements?

  • The supplement helps to boost immunity due to its natural ingredients
  • It acts as an antiviral defense for cold and flu. The body can stave off seasonal illnesses with the help of this product  
  • Suitable for the whole family: The most susceptible people to the flu or colds are the children and older people.

The immune defense supplements are available for children aged 12 years and above. With this, you can have the chance to protect the whole family.

  • If suffering from colds or flu, Immune defence can help to reduce the symptoms by up to 50%.

This can help you recover faster compared to when you could have taken other medications.


With the above, nothing would beat like knowing what makes up this unique supplement.

What Constitutes Immune Defence?

Immune Defence contains 3 primary immune system boosting vitamins. They are

  • Vitamin C: This Vitamin contributes significantly to the immune defense as it supports many cellular functions in the body.
  • Vitamin A: According to the Journal of Clinical Medicine, Vitamin A proves to have a therapeutic effect in treating various infectious diseases.
  • Vitamin E: This vitamin helps the body to fight off infections, especially to the aged people.  According to studies, it acts as an antioxidant to protect the body from being damaged by free radicals.

 Other ingredients include:

These ingredients have been backed by science and have shown to work in immunity-boosting supplements.

  • Zinc Gluconate
  • Sugar
  • Rose Hip Powder
  • Acerola Powder
  • Oil of Aniseed
  • Bulking Agent( Magnesium Stearate)

How Does Immune Defence Work?

One of the major questions asked is how do immune boosters work?

 The fact is:

Any safe immune system booster should be able to protect our bodies from infections.

Thus we should give the natural immune boosters our full support to ensure we stay healthy.

A healthy body keeps the mind healthy.

The Immune Defence helps to create and store the white blood cells that are used to fight bacteria or viruses that may enter our bodies. This is common during cold and flu seasons.

How To Use Immune Defence

According to the manufacturer, the user should suck one lozenge every 2 hours.

More information on how to use Immune Defence can be found on its official website.

Lozenge- A small medical tablet to be dissolved in the mouth


One should not take more than 4 tablets daily. This could lead to some nasty side effects.

Some of the side effects include:

  • Nausea
  • Abdominal pain
  • Copper deficiency

The pregnant or breastfeeding mothers can also take only 25mg/day of the product.


The manufacturer strongly advises the above category to seek advice from their doctors

Where To Buy Immune Defence

Immune Defence can be ordered from its official website.

Other local stores, such as Amazon and Walmart, sell the product

But then again:

It’s better to buy from their official website since there are lots of benefits such as:

  • Fast and free shipping
  • 100% money-back guarantee


  • Family pack plus for 5 months’ supply@$174.75
  • Family pack for 3 months’ supply @$114.85
  • 1 month supply@44.95

Best Immunity Booster Frequently Asked Questions 

1. What Are Immune Booster Supplement?

Immune booster supplements are products that include natural ingredients designed to boost the immune system

2. Which Supplements Can Boost My Immune System Faster?

Any supplement with Vitamin C as the main ingredient can boost the immune faster compared to any other supplement. However, for maximum results, the supplements should go hand in hand with a proper diet and exercise.

3. How Do Immune Boosters Work?

Immune boosters help in creating, storing and distributing white blood cells to help fight bacteria or viruses that make the body prone to infections

4. Do Immune Boosters Have Side Effects?

Immune boosters are safe and contain no side effects. However, the user should take the recommended dosage to ensure maximum effects


With low immunity, the body becomes weak in such a way it’s can’t fight any infection.

Those who have low body immunity have the answer now with the best immunity boosters we have discussed.

 With the immunity boosters, the body can fight off pathogens.

There is so much information about boosting the immune system, it would be better to use the right supplements that have been tested to work.

Most of the immune booster supplements contain side effects, and no one will tell the user.

As well,

There is no magic immune booster supplement, but with this guide, an individual can choose what is best for them to strengthen their immune system naturally.

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