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Quercetin With Vitamin C Benefits

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How Quercetin & Vitamin C Are GREAT Antihistamines!

Can you take a quercetin supplement with a pineapple allergy? If youre allergic to pineapples, you should avoid quercetin supplements with bromelain. Bromelain, an enzyme in pineapples, is added to quercetin supplements to boost bioavailability. Overuse of bromelain can create problems for consumers.iv. Quercetin with Bromelain with Prostatitis

What Are The Risks Of Taking Quercetin

When you take it as a food, quercetin is likely safe. As a supplement, quercetin may be safe if you take reasonable amounts for a short time, such as 500 milligrams twice a day for 12 weeks. Taken longer, the risks are unknown.

Side effects. Quercetin may cause headache or tingling in arms and legs. Other side effects may occur if you receive quercetin treatment by IV .

Risks. Kidney damage may result from high doses. If you are pregnant or breastfeeding, do not take quercetin as a supplement. You may get too much, especially since quercetin is in so many foods.

Interactions. Be careful if you are taking drugs such as antibiotics, cyclosporine, warfarin, or drugs that are changed by the liver. Quercetin may change how these drugs work and raise the risk of side effects.

There don’t appear to be interactions between quercetin and foods or other herbs and supplements.

The FDA does not regulate supplements. Be sure to tell your doctor about any supplements you’re taking, even if they’re natural. That way, your doctor can check on any potential side effects or interactions with medications, foods, or other herbs and supplements. They can let you know if the supplement might raise your risks.

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Quercetin Zinc And Synergy With Vitamin C

Although quercetin has some direct effects that protect against viral infection, its major effect maybe by acting as what is known as an ionophore in aiding the transport of free, unbound zinc into cells.

In its free, ionic state zinc can inhibit the replication of many viruses. When many viruses infect a cell, it inserts a piece of its genetic code and an enzyme called replicase to allow the virus to replicate. Zinc is able to block the replicase enzyme and, therefore, block the replication or spread of the virus. That is one of the reasons zinc is a popular recommendation against the common cold.

In order for zinc to have this effect on viral replicase, however, it is dependent upon an open ionophore – a special cell membrane channel that allows for an ion to enter the cell. Quercetin can act as a zinc ionophore to increase the levels of ionic zinc within cells to protect against viral replication. This effect of quercetin may explain the decreased number of respiratory tract infections noted in the studies described above.5

Another partner nutrient for quercetin is vitamin C. When vitamin C and quercetin are combined in test tube studies, their immune-enhancing and antiviral actions work synergistically to produce better results than when either is added alone.6

In addition to eating high vitamin C containing foods on a regular basis supplementing with additional vitamin C is also recommended .

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iv. Does Quercetin Help Allergies? : Research Studies

Quercetin has been shown to reduce inflammation in multiple studies. In this 8 week study involving 50 women with rheumatoid arthritis, participants took 500mg of quercetin per day or a placebo. The quercetin group reported less early morning stiffness, morning pain, and after-activity pain. Early studies on quercetin and inflammation are promising, although more large scale human studies need to be performed to verify these benefits.Theres evidence that quercetin reduces allergy symptoms. Researchers believe quercetins anti-inflammatory effects may relieve allergy symptoms.This study , for example, found that quercetin could be effective for treating the anaphylactic reaction in someone with peanut allergies. A similar study from 2006 concluded that quercetin was a safe, natural therapy that may be used as primary therapy or in conjunction with conventional methods for blocking allergies. Its possible that quercetin has the same anti-allergy effect in humans, although more research needs to be done.

b. Quercetin Benefits for CancerDoes Quercetin Fight Cancer? : Research Studiesc. Quercetin Benefits for BrainDoes Quercetin Reduce the Risk of Alzheimers? : Research Studies

How Much Quercetin Supplements Should I Take

Quercetin &  Bromelain w/ Vitamin C &  Magnesium 250 Capsules

Supplemental quercetin can be found alone or in combination with other bioflavonoids or nutrients for the treatment of many of the conditions listed above. The recommended dose of quercetin is between 300 and 1500mg daily in divided doses. For every 500mg of vitamin C supplemented, 100mg of bioflavonoids should also be used.

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The Healing Effects Of Taking Quercetin And Vitamin C

Your body needs nutrients from your environment, specifically, through your diet, for it to function normally and keep itself safe from potential threats, such as a disease.

Quercetin, although not as well-known as most antioxidants, is a natural chemical you can obtain from eating plants. It can do wonders for your body, especially when supported with vitamin C.

Vitamin C, which is otherwise known as ascorbic acid, is a powerful antioxidant found in most fruits and vegetables. It is considered a natural shield against various diseases since it helps boost your immune system and protect our cells from oxidative damage.

What Is A Liposome

Liposomes are cells composed of two layers of fatty molecules that protect an inner compartment composed of water and water-soluble active ingredients. The water-soluble ingredient, like vitamin C for example, is protected within the inner compartment by the liposomal structure.

Liposomes of quercetin are not possible because quercetin is not water-soluble, but that turns out to make quercetin a perfect candidate for the use of technology that creates the LipoMicel Matrix.

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Antioxidants Vs Free Radicals

In order to understand how taking a quercetin supplement may be beneficial to your health, its important to understand how antioxidants work.

Free radicals are molecules that can damage cells, potentially leading to numerous diseases, including cancer and heart disease. They form in the body as a result of the metabolic process, primarily when poor diets that consist of trans fats, processed foods, and excessive amounts of sugar are consumed. Environmental factors can also cause free radicals to develop, such as exposure to pollution, radiation, cigarette smoke, and various chemicals. A high level of free radicals in the body can lead to a process called oxidative stress, which in turn can lead to inflammation and various symptoms, ailments, and diseases.

One of the jobs of antioxidants is to tackle free radicals and reduce or eliminate their ability to cause cell damage. Antioxidants are found in numerous types of healthful foods, such as fruits, vegetables, grains, and seeds. They are also available in high concentrations in dietary supplements like quercetin.

Patients At Higher Risk Of Contracting And Developing A Viral Infection Can Find Vitamin C With Quercetin Benefits As Well

Quercetin plus Vitamin C from EuroMedica®

Quercetin is a plant flavonol found in a variety of foods and drinks ranging from apples, grapes, and citrus fruit to onions, tea, and even red wine. This naturally occurring polyphenol helps give these items their scent and color. While many flavonoids have traditionally been sought out for their numerous health impacts, vitamin C with quercetin benefits a number of inflammation-based maladies.

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May Improve Energy And Endurance

Quercetin is added to some athletic supplements because its believed to help increase athletic performance and endurance, likely because of its positive effects on blood flow. Researchers from the School of Applied Physiology at the Georgia Institute of Technology found that, on average, quercetin provides a statistically significant benefit in human endurance exercise capacity and endurance exercise performance.

Other studies show that quercetin helps increase immune function and prevents susceptibility to illnesses that can occur when someone trains intensely and experiences exhaustion. One study found evidence that taking a dosage of 500 mg of quercetin twice daily helped protect cyclers from exercise-induced respiratory infections.

Because it can boost energy, quercetin could affect sleep patterns. One study found evidence that it may alter the sleep-wake cycle partly through activation of GABA receptors. However, insomnia is generally not believed to be a common side effect of taking quercetin.

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Immune Health Supplement Update: Quercetin And Vitamin C

An article was recently published in the June 19, 2020 journal Frontiers in Immunology entitled: Quercetin and Vitamin C: An Experimental, Synergistic Therapy for the Prevention and Treatment of SARS-CoV-2 Related Disease . The article states, Quercetin is a well-known flavonoid whose antiviral properties have been investigated in numerous studies. There is evidence vitamin C and quercetin co-administration exerts a synergistic antiviral action due to overlapping antiviral and immunomodulatory properties. Also, the ability of vitamin C to recycle and enhance the benefits of quercetin. The researchers noted, The article presents the current evidence for the use of vitamin C and quercetin both for prophylaxis in high-risk populations and for the treatment of COVID-19 patients as an adjunct to promising pharmacological agents such as remdesivir or convalescent plasma.

Quercetin has a long history as an antioxidant with anti-inflammatory and anti-blood clotting effects in the Mediterranean diet. Quercetin is very abundant in red grapes and red wine. There is a great amount of research supporting the antiviral properties of quercetin and polyphenols in the scientific literature. It has been shown in the literature that overtrained athletes supplemented with quercetin and vitamin C help protect them from upper respiratory tract infections.

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Helps In Preventing Inflammation And Allergies

Quercetin has also been shown to be anti-inflammatory and to directly help prevent incorrect immune responses like those involved in autoimmune conditions and allergies. In fact, supplementation with quercetin has been shown to stabilize certain immune cells, called mast cells, to prevent their release of histamine. Mast cells release histamine when they come into contact with an allergen. Histamine triggers other immune cells to migrate to the area so that the body mounts an immune response. It is this immune response that is responsible for allergic symptoms such as runny nose and itchy watery eyes. By preventing histamine release, quercetin can help to prevent environmental and skin allergies. For more information on this effect, please see our Autoimmune Disease and Allergy articles.

It Protects Against Allergies


Quercetin inhibits the release of histamines thereby making it effective against common symptoms of itching, watery eyes, and hives. Aside from this, it can also be taken ahead of exposure as a means of preventing allergies. This chemical is also being studied as a possible treatment against anaphylactic reactions.

Plus, quercetin has the ability to suppress leukocytes in both the lungs and bloodstream leading to a relaxed airway passage and more elastic lung tissue. Due to these, quercetin is considered to be a potential treatment for asthma, which is usually triggered alongside allergies.

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May Ease Allergy Symptoms

Quercetins potential anti-inflammatory properties may provide allergy symptom relief.

Test-tube and animal studies found that it may block enzymes involved in inflammation and suppress inflammation-promoting chemicals, such as histamine (

13 ).

Still, its unclear whether the compound has the same effect on allergies in humans, so more research is needed before it can be recommended as an alternative treatment.

Quercetin And Vitamin C For The Prevention And Treatment Of Covid

The FLCCC team has developed the I-MASK+ protocol for prophylaxis and at home treatment of early stage disease.

Related item: Fingertip Pulse Oximeter Disclaimer: Always see your doctor before taking these supplements. Be aware that most of the dosages are above the recommended dietary allowance and therefore such dosages should not be maintained on a long term basis. Our aim here isn’t to replace your doctors’ advice. It is intended as a sharing of knowledge and information. Do take note that supplements are not 100% protective or curative against COVID-19. Nutritional supplements are meant to tip the scales in favour of you in terms of your immune system and to improve your probability of a smooth recovery, if at all you do get COVID-19. You still need to follow the advice given by CDC, WHO and your local authority in terms of local guidelines such as mask wearing, vaccination, social distancing and avoiding crowds. If you combine multiple strategies, it’s going to be difficult for the virus to spread and survive.

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Why Quercetin Belongs In Your Immune Support Kit

Each year when the colder months roll around, we stock up on supplements to help support our immune and respiratory health. Along with trusty ingredients like vitamin C, vitamin D, zinc, and elderberry, theres another superhero ingredient that belongs on the team: quercetin.

Quercetin is an antioxidant bioflavonoid thats increasingly being researched for its benefits for the immune system, blood vessels, and respiratory health.* These benefits are important, not just for the cold weather season, but for heart health too.*

If quercetin hasnt been on your radar until now, thats probably because its had some delivery challenges. Most standard supplement forms of quercetin are difficult for the body to absorb, making it hard to reap the full benefits. Thats why were so excited to introduce our new Quercetin LipoMicel Matrix, which is uniquely designed for up to 10x better absorption to help unlock the full benefits of quercetin.

Quercetin: A Team Player

Vitamin C and Bio-Quercetin Phytosome – For healthy immune support | Life Extension

Quercetin is one of the bioflavonoids found in elderberry and is considered its most active antioxidant compound. Its also found in many foods that are high in vitamin C, such as citrus fruits.

Nature puts these ingredients together for a reason: they seem to work in synergy. Studies suggest that quercetin and vitamin C complement each others immune benefits and may work better when combined.*,, Vitamin C also helps to extend the life of quercetin in the body.*

Quercetin plays well with the rest of the immune support team, too. It boosts the activity of zinc by helping to transport the mineral across cell membranes. And it seems to help activate vitamin D receptors, supporting the activity of this crucial vitamin in the body.*

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Quercetin & Vitamin C

More than ever before, we understand the value of a strong immune system. The importance of getting the right nutrients in a daily regimen to prevent and fight viral infections, bronchial congestion, and allergic reactions cant be overstated. And one of the strongest nutrient combinations I can recommend is quercetin and vitamin C.


While quercetin may not be quite as well-known as other immune strengthening ingredients, it is more common than you might think. Quercetin is a flavonoid polyphenol compound found in apples, grapes, onions, tea, and various herbs. Theres no doubt that a diet rich in quercetin containing foods can help you stay healthy, but theres also plenty of research that backs up quercetin as a natural medicine for fighting viral infections.

In fact, scientific studies show that pretreatment with quercetin is the best way to stop viruses from replicating, and it effectively blocked H1N1 within 48 hours. Other in vitro work found that quercetin inhibited replication of rhinovirus, the virus responsible for the common cold, within 24 hours. Other laboratory research has found that quercetin reduces bronchial inflammation and moderates the immune response to prevent it from going into overdrive. It is considered a valuable natural antiviral in cases of influenza A virus and can help stop many others as well.




The Study Of Quadruple Therapy Zinc Quercetin Bromelain And Vitamin C On The Clinical Outcomes Of Patients Infected With Covid

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Verified July 2020 by Amr kamel khalil Ahmed, Ministry of Health, Saudi Arabia. Recruitment status was: RecruitingFirst Posted : July 13, 2020Last Update Posted : July 13, 2020
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Condition or disease

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Beneficial Effects Of Vitamin C And Quercetin In Viral Infections

There is a tremendous amount of literature supporting the antiviral properties of quercetin, in both in vitro and in vivo experiments. Quercetin inhibits several respiratory viruses in cultured cells . It inhibits the cytopathic effects provoked by many serotypes of rhinovirus, echovirus , coxsackievirus , and poliovirus at a minimal inhibitory concentration of 0.03 to 0.5 g/ml in Hela or WI-38 cells . Quercetin also significantly reduces plaque formation by RNA and DNA viruses displaying anti-infective and anti-replicative properties . It inhibits the replication of cytomegalovirus inoculated HeLa cells at a half inhibitory concentration of 3.2 ± 0.8 M and with a selectivity index of 22 . Dengue virus type 2 replication in Vero cells is inhibited by quercetin at an IC50 of 35.7 g/mL, causing a DENV-2 RNA reduction of 67%. This is attributed to quercetin’s ability to either block virus entry or inhibit viral replication enzymes such as viral polymerases .

The only human study of vitamin C has been in USSR soldiers with severe viral infection indicated vitamin C supplementation protected from influenza-associated pneumonia and was associated with shorter hospital stays .


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