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What Vitamins To Take For Weak Immune System

What Are The Best Supplements To Take During Covid

How to improve your immune system with vitamins amid COVID-19 pandemic

Whether eaten as a whole food or in the form of a pill, the following supplements may help keep you healthy and your immune system in top shape to combat coronavirus. Once again, benefits are theoretical.


Full of antiviral and anti-inflammatory properties, elderberry syrup is used as a remedy for colds, flus, and bacterial sinus infections. Elderberry works by reducing swelling in the mucus membranes.

Some studies suggest elderberry extract reduces the duration of the flu, which is why some believe it may also help your immune system against coronavirus infection.


Mushrooms are high in selenium and B vitamins like riboflavin and niacin, which are needed to keep the immune system running optimally. Mushrooms are also high in polysaccharides, sugar-like molecules that boost immune function.


Astragalus is an herb, and its root is used in medicine. Typically used to strengthen the immune system and treat the common cold, upper respiratory infections, seasonal allergies, swine flu, astragalus is also used to fight bacteria and viruses.

Its effectiveness against illness doesnt have a lot of research behind it, although in treating seasonal allergies, 160 mg of astragalus root extract by mouth daily for 3-6 weeks was found to improve symptoms such as running nose, itching, and sneezing.



Garlics antiviral properties may be helpful in reducing the severity of symptoms in colds, flu or COVID-19 infections.


Licorice root

You Have Bowel Movements Every Day

If you have a clear bowel movement every day, then it is a sign that you have an excellent immune system. Having at least one bowel movement every day effortlessly without taking any medicines is considered to be healthy.

Ideally, when your stomach gets clear right after you wake up, it means that the waste that was meant to leave your body is going correctly. It is not piled up or building inside your stomach.

Help Your Body Respond To Stress

Speaking of the stressors of life, periods of stress can single-handedly weaken your immune system.

While its not realistic to eliminate all stress from your life, there is one great way to help your body cope during tense times: nourish your adrenal glands.

Your adrenal glands sit on top of your kidneys and are small but mighty. Through the hormones they produce, your adrenal glands help regulate your metabolism, immune system, blood pressure, response to stress, and other essential functions.*1

Supporting your adrenal glands is essential to a healthy stress response. We recommend turning to adaptogens such as Maca and Ashwagandha to nourish the adrenal glands and promote stress relief and equilibrium of mind, body, and spirit.*

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Best Vitamins For A Strong Immune System

The chilly autumn days are just around the corner, and so is the beginning of the dreaded flu season. And with the threat of COVID-19 hitting us harder again, who wouldnt want their immunity to be in top shape right now? As youll already know if youve read our article on the top natural ways to boost your immune system, giving your bodys defence mechanism a literal boost is not really a thing, there is still a lot we can do to help it function properly. And as it all starts with proper nutrition, lets get ready for the winter by taking a look at what vitamins help the immune system and how to get enough of them.

Supplements To Boost Immune System:

Eat These Foods to Boost Your Immune System  SheKnows

Fortify your immune system’s defences by making sure you’re getting an adequate amount of the following supplements:

1. Selenium

Selenium deficiency is associated with impaired immune function, says Marogy. ‘People with inadequate levels of selenium have been shown to have lesser amounts of T-cells and a reduced ability to respond to viral infections,’ she says. ‘Selenium also plays a role in the production of cytokines molecules that play an important role in coordinating the immune system.’

2. Zinc

When people are low in zinc, the immune response is the first to suffer and there is a greater risk of oxidative stress and inflammation.

‘Zinc is particularly important when it comes to warding off infections as we age, owing to the role it plays in the health of the thymus gland which produces infection-killing T-cells,’ says Marogy.

Food sources include seafood, pork and beans.

3. Omega-3 fatty acids

The most important omega-3 fatty acids for a healthy immune system are DHA and EPA . They assist in reducing inflammation and promoting healing after any bacteria and viruses have been neutralised.

Natural dietary sources are limited to oily fish and seafood, so supplements containing fish oil or algae are important alternatives if you dont eat fish regularly.

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Reduce Stress For Increased Immune Function

Daily stress can overwork your immune system and drain your ability to stay healthy. Big and little daily stressors can constantly push your immune system. Thats why its important to take time for self-care. Make time eachday to dothings to “refill your tank.” Self-care varies from person to person. It can include setting aside time to read, meditate, talk a walk, do a hobby or get a massage.

Support Digestion With Prebiotics*

The health of your digestive tract can directly impact the health of your immune system.

A thriving gut microbiome allows your digestive system to appropriately deliver needed nutrients to all parts of the body, and it can support a healthy inflammatory response as well as a healthy immune system.

Probiotics and prebiotics both play a part in gut health. Probiotics are the good bacteria found in your gut. When you take a probiotic supplement, those good bacteria join the others that are already part of your gut microbiome.

In order for probiotics to thrive, they need nourishment. Thats where prebiotics come in. Prebiotics provide the sustenance that probiotics need to flourish.

You can ingest prebiotics by eating foods like asparagus, bananas, beans, and others. But you can also get prebiotics through a prebiotic supplement, like Gaia Herbs Microbiome Food.

Our plant-based prebiotic powder is made without added fillers, flavors, or sweeteners and includes many prebiotic plants that you may not consume in an average day: Larch, Acacia, Acerola, Fenugreek, and Ginger, just to name a few.

This tasty supplement powder provides a convenient way to support digestive health, function, and regularity while supporting immune health at the same time.*

Simply mix one teaspoon in a glass of water and drink between meals. You can gradually increase this dose to one tablespoon per day.

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Helpful Ways To Strengthen Your Immune System And Fight Off Disease

How can you improve your immune system? On the whole, your immune system does a remarkable job of defending you against disease-causing microorganisms. But sometimes it fails: A germ invades successfully and makes you sick. Is it possible to intervene in this process and boost your immune system? What if you improve your diet? Take certain vitamins or herbal preparations? Make other lifestyle changes in the hope of producing a near-perfect immune response?

What Supplements Should I Take For Coronavirus

OSU researcher: Vitamins help immune system fight COVID-19
  • The recent COVID-19 coronavirus outbreak causes a variety of telltale signs and symptoms, ranging from fever and dry cough, to more extreme symptoms requiring immediate medical help such as difficulty breathing and confusion.
  • We do not currently have any antiviral medications that specifically cure or treat COVID-19, so treatment will usually involve managing symptoms with supportive treatments.
  • COVID-19vaccines are now available in order to help protect you from becoming infected with the virus.
  • If you have relatively mild COVID-19 symptoms and dont have any other medical conditions that would put you at high risk for developing complications of COVID-19 , these vitamins and supplements might help strengthen your immune system to fight coronavirus.
  • It is important to note that no vitamin or supplement can cure COVID-19, nor is there solid evidence any non-FDA-approved vitamin or supplement has any effect on COVID-19. Immune supporting effects of supplements and vitamins in the context of the coronavirus is theoretical.
  • Vitamins and supplements may interact with one another in your system and with prescription or over-the-counter medications. Notify your doctor about all the drugs and supplements you are taking, and do not start a vitamin regimen without consulting your physician.

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Medications That Weaken Your Immune System And Fungal Infections

Overall, most serious fungal infections are rare, but they do happen. They are most common among people with weak immune systems. People with certain health conditions may need to take medications with side effects that can weaken your immune system and put you at risk for fungal infections.

Specifically, corticosteroids and TNF inhibitors are two types of medications that can increase your chances of getting a fungal infection.1

Some fungal infections can be serious, such as:

How To Boost Your Immune System With 5 Common Vitamins

Vitamin deficiencies can weaken your immune system. Boosting the levels through diet or supplements can help boost your immunity.

Feeling under the weather? Worried about catching a bug the next time one begins to make its way through your family and friends?

Post-pandemic, many people are realizing that their immune system could do with a boost. Our immune system is our first line of defense against the viruses and bacteria we encounter every day, so it pays to make sure yours is fighting fit, and one of the key ways to maintain immune health is by supplementing with immune-boosting vitamins and nutrients.

Approximately 30% of the United States population is at risk for at least one vitamin deficiency, meaning that our bodies lack the essential nutrients needed to keep our immune system strong. However, we can give our immune system a helping hand by adopting a supplement routine designed to strengthen it and the good news is that there are five easy-to-find vitamins perfect for the job.

Vitamin C isnt just to prevent scurvy it is also important for a healthy immune system.

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Watch: How Your Immune System Helps Fight Viruses

We spoke to Philip Calder, professor of nutritional immunology at the University of Southampton and president of the Nutrition Society.

It’s important to try and eat as well as possible. This means limiting your intake of free sugars, salt and saturated fat, plus every day eating:

  • a variety of fruit and vegetables each day – at least five portions
  • starchy carbohydrates, choosing wholegrain and higher fibre versions as much as possible
  • protein-rich foods, including beans, pulses, fish, eggs and meat
  • dairy or fortified dairy alternatives.

These foods should give you all the nutrients you need to keep your immune system functioning well.

One Last Word On Supplements


There’s no shortage of supplements claiming they can stimulate your immune system but be wary of these promises.

Unlike medications, supplements aren’t regulated or approved by the FDA. And there’s no evidence that supplements actually help improve your immune system or your chances of fighting off an infection or illness. For instance, if you think a megadose of vitamin C can help you keep from getting sick, think again.

If you’re looking for ways to help boost your immune system, consider keeping up with the lifestyle habits above, rather than relying on claims on a label.

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Your Immune System Support Faqs

How can I boost my immune system fast?

It is a myth that you can somehow boost your immunity and it certainly isnt a fast process.

Yes, there are vitamins and minerals like vitamin C, vitamin D and zinc that have been proven to support normal immune function, but the key word here is normal not boosted.

Read more about this here: Can you really boost your immune system?

What are the three best vitamins for boosting your immune system?

Again, you cannot boost your immune system, but the three best vitamins for supporting your immune system are vitamin C, vitamin D and vitamin B6.

What vitamin is good for weak immune system?

A combination of all of the vitamins listed above would be good for nourishing a weak immune system, which is why a healthy balanced diet is always recommended.

If Im Taking An Immunosuppressant Should I Worry About Covid

Not typically.

COVID-19 vaccines may provide less protection if you have a weakened immune system. But this doesnt mean they lose all effectiveness. In many cases, youll likely need an extra COVID-19 vaccine dose to help make up for this difference.

The Centers for Disease Control and Prevention recommends everyone age 5 and older to get fully vaccinated against COVID-19. This includes people with weakened immune systems. People who are immunocompromised are at higher risk for severe COVID-19 if you test positive for the virus. This includes people taking medications that weaken your immune system.

Your healthcare provider can help answer questions you may have about COVID-19 vaccines, including which vaccines you should receive and when. This includes choosing which additional primary shot or booster shot to get if youre considered moderately to severely immunocompromised.

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Immunomodulatory Role Of Vitamin D

The influence of VD3 metabolites in the immune system, particularly of 1,252 VD3, has been known for more than 20 years,. In vitro, 1,252VD3 exerts a marked inhibitory effect on adaptive immune cells . It inhibits T-cell proliferation,, the expression of interleukin-2 and interferon- mrNA and protein in T cells,, and CD8 T-cell-mediated cytotoxicity. The decrease in the production of IL-2 and IFN by 1,252VD3 is partially mediated by binding of the VDRRXR complex to the VDRE in the promoters of genes encoding IL-2 and IFN . The anti-proliferative effect could be explained, at least in part, by the decrease in IL-2 production, as proliferation is partially rescued by adding exogenous IL-2 . These inhibitory effects of 1,252VD3 are most pronounced in the memory T-cell compartment, which is concomitant with the higher expression of VDR in effector and memory T cells compared with naive T cells. Moreover, 1,252VD3 enhances nonspecific T-cell suppressor activity, as measured by the ability of 1,252VD3-treated T cells to suppress primary mixed-lymphocyte reactions and cytotoxic T-cell responses.

Mechanisms of vitamin D immunomodulation

Stress And Immune Function

Take these vitamins for an extra push in strengthening your immune system

Modern medicine has come to appreciate the closely linked relationship of mind and body. A wide variety of maladies, including stomach upset, hives, and even heart disease, are linked to the effects of emotional stress. Despite the challenges, scientists are actively studying the relationship between stress and immune function.

For one thing, stress is difficult to define. What may appear to be a stressful situation for one person is not for another. When people are exposed to situations they regard as stressful, it is difficult for them to measure how much stress they feel, and difficult for the scientist to know if a person’s subjective impression of the amount of stress is accurate. The scientist can only measure things that may reflect stress, such as the number of times the heart beats each minute, but such measures also may reflect other factors.

Most scientists studying the relationship of stress and immune function, however, do not study a sudden, short-lived stressor rather, they try to study more constant and frequent stressors known as chronic stress, such as that caused by relationships with family, friends, and co-workers, or sustained challenges to perform well at one’s work. Some scientists are investigating whether ongoing stress takes a toll on the immune system.

Despite these inevitable difficulties in measuring the relationship of stress to immunity, scientists are making progress.

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Immune System Booster Vitamins

When talking about immunity, we often might refer to a desire to ‘boost’ our immune system but in reality, we don’t actually want this to happen, as Dr Ruxton explains.

‘Like many other body systems, such as blood glucose levels or brain oxygen levels, our immune response works across a tight optimal range,’ she says. ‘Too low, and our sluggish system will not successfully attack and contain pathogens.

‘Too high, and we are at risk of developing so-called autoimmune conditions where the bodys overreactive immune response starts to attack normal healthy tissue. Examples of these conditions include type 1 diabetes, multiple sclerosis, rheumatoid arthritis and psoriasis.’

Instead, you should look make sure your immune system is functioning optimally, and that’s where nutrition getting the right vitamins for immune system comes in.

Support Your Immune Function With Good Nutrition

One of the most valuable things you have is your health. As a dietitian, I have received numerous queries about recommended foods, supplements and diet patterns to boost immune function. While it is true that nutrition plays a large role in immune function, diet recommendations for the prevention of acute illnesses, like COVID-19 and other viruses, don’t look a whole lot different than general guidelines for healthy eating.

I’ll start by saying that the concept of boosting the immune system through diet is flawed, as boosting refers to something that is stimulated above the normal level. A good diet cannot boost the immune system, but it’s important to maintain a functional immune system by avoiding immunodeficiency due to malnutrition or micronutrient deficiencies.

It’s important to note that no single food or nutrient will prevent illness. Also, the immune system is incredibly complex and influenced by a variety of other factors, including stress level, age, sleep and other medical conditions.

A few key micronutrients have been identified as critical for the growth and function of immune cells, including:

Need a multivitamin or mineral supplement?

A general multivitamin or mineral supplement providing no more than 100% of your recommended daily allowance can be used and is generally safe for many people. Your health care provider may recommend further supplementation based on your lab values or medical status.


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