4.8/5 based on 12 reviews

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No contaminants




Gluten Free


No allergens




No fillers

  • Benefits

  • Supplement Facts

  • Suggested Use

Quercetin, one of the most effective natural antihistamines, is poorly absorbed by the body. QuercElite® solves this problem by combining it with our proprietary broccoli seed complex.

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    Improves gut health

Serving Size: 2 Capsules
Servings Per Container: 30
  # per serving %DV**
Quercetin 350mg
Broccoli Seed Complex 250mg
Other Ingredients: Vegan Caps (cellulose derivative)

Our recommended dose for QuercElite® is 2 capsules per day (350mg of quercetin). You can take both capsules at once, however, we recommend that you take one in the morning and one in the evening.

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Try Your First Bottle Risk Free

We hope you receive benefit from our product and experience how important it is to your health.

However, if you are not completely satisfied with our product, we're offering you a 100%, 100-day money-back guarantee on your first bottle purchased from our website.

*Original shipping costs will not be refunded

QuercElite® Frequently Asked Questions

Here are some answers to the most frequently asked questions we get about QuercElite®.

What is QuercElite®? img img

QuercElite® is a bioavailable quercetin supplement produced by Mara Labs that contains quercetin, a beneficial plant-based molecule, and our proprietary Broccoli Seed Complex (BSC), which markedly increases the bioavailability of quercetin.

What does QuercElite® do? img img

Quercetin is an antioxidant found in many plant species that helps neutralize unstable molecules, called free radicals, that can cause damage to cells by creating chronic inflammation. The bioavailable quercetin in QuercElite® helps to boost your immunity, alleviate allergies, promote brain health, and protect against adverse effects of aging.

How is QuercElite® different from other quercetin supplements? img img

Quercetin is normally only 5% bioavailable, but the broccoli seed complex in our QuercElite® increases the bioavailability and allows quercetin to cross the cell membrane, whereas normally quercetin on its own will not. Therefore, QuercElite® solves the bio-availability problem by getting it into the body so that it works fast.

How does it work? img img

After getting through the gut barrier and into the bloodstream, QuercElite® performs a range of functions.

With our highly bioavailable formula, QuercElite® has an immediate impact on allergies and other allergic responses from the body. Recent research has found that quercetin has a broad impact on the anti-inflammatory components of allergies and allergic reactions. Primarily, QuercElite® blocks the release of histamines (molecules that cause allergic reactions) from your immune cells. Similarly, QuercElite® can help with Mast Cell Activation by blocking histamine release.

In addition to these anti-allergy mechanisms, QuercElite® has anti-aging and gut health benefits. As we age, cells can become less functional and get trapped in a state called senescence. These cells produce more inflammation in the body. Quercetin is a senolytic compound, meaning it clears the body of senescent cells and improves health. It is also one of the strongest natural tight junction inducers, improving gut health and gut barrier protection. The use of quercetin has been shown to protect cell viability and longevity, specifically in the prostate. Primarily, quercetin’s mechanisms have a positive effect on cellular inflammation and apoptosis, while maintaining healthy cells.

QuercElite® can be taken daily, alongside our other supplements, since it has anti-aging and gut health benefits. However, it can also be used as needed for immediate relief for allergies.





How do I know it’s helping me? img img

QuercElite® can work immediately to alleviate allergies, or long-term to improve gut health and prevent aging. Our clinical and lab experience along with customer testimonials inform us that the effects of QuercElite® are noticeable after only a few days to a few weeks. The most common testimony we receive is that people first notice a reduction in their allergies, both seasonal and environmental.

What are the ingredients? img img

QuercElite® is an all-natural product and does not contain any fillers, binders, preservatives, or lubricants. The first ingredient is pure quercetin. The second ingredient is our proprietary Broccoli Seed Complex, which contains sulforaphane as well as its “cousin” molecules, which are similar in structure and function, to help increase the bioavailability of quercetin. The last ingredient is the cellulose capsule, which is composed of only cellulose and water and is gluten-free and vegan.

Why does QuercElite® contain the Broccoli Seed Complex? img img

Our proprietary Broccoli Seed Complex contains cousin molecules to sulforaphane that work synergistically to increase the bioavailability of QuercElite®, which means it helps quercetin get into the cell.

How much Sulforaphane is in QuercElite®? img img

QuercElite® contains 1.5 mg of Stabilized Sulforaphane per capsule.

What is the suggested dosage? img img

Our recommended dose for QuercElite® is 2 capsules per day (350mg of quercetin). You can take both capsules at once, however, we recommend that you take one in the morning and one in the evening

Who can take QuercElite®? img img

Kids and adults can take QuercElite®. It depends on what works for the individual.

Do I need to take it with food? img img

We recommend taking QuercElite® with food. But you can also take QuercElite® on an empty stomach.

Should I take it if I’m pregnant or nursing? img img

We recommend consulting your OBGYN before taking QuercElite®.

Are there any adverse effects to taking it? img img

There are no known adverse effects to taking QuercElite®.  However, if you are new to this supplement or supplements in general and are struggling with health, we would recommend starting slowly and taking it with a glass of water and a meal.

Are there any known medication or supplement interactions? img img

Due to its effect on liver enzymes, quercetin, as well as the sulforaphane from the Broccoli Seed Complex, can interact with medications including blood pressure, antibiotics, and sedatives. We recommend consulting your physicians if you are adding QuercElite® to your regimen.

Does it need to be refrigerated? img img

No. If you use it daily, QuercElite® does not require refrigeration. If you use QuercElite® periodically, we recommend putting it in the refrigerator so that the ingredients stay potent for a longer period, up to one year.

Does it expire? img img

Once QuercElite® is opened, it should be kept in your refrigerator with the desiccant sachet insert (for moisture) and consumed within 60 days. Bottles are best consumed within 1 year of production.

Is there a guarantee? img img

We strongly believe you will benefit from QuercElite® and experience how important it is to your health. If you are not completely satisfied with our product, however, we offer a 100%, 60-day money back guarantee on your first bottle purchased from our website. Your original shipping costs will not be refunded.

Rated 4.5 out of 5 stars
Based on 17 reviews
17 reviews
  • Delores L.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    4 months ago
    QuercElite Alleviated My Allergies

    I started taking Querc-Elite in October 2023 because I was going to New Zealand in December. The previous December when I visited I suffered with terrible allergies, despite taking OTC anti-histamines. My allergy symptoms were so bad I had to come back home earlier than I anticipated.

    This year on my holiday visit to New Zealand because I started taking Querc-Elite in October my reaction to the hay harvesting and whatever else was in the air in New Zealand was minimal and rare. What a relief. It worked. And I did not get fatigued as I do with over-the-counter solutions. Plus, no chemicals just natural ingredients.

  • Marcia L.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    1 year ago
    QuercElite for Dogs?

    "Believe it or not, our veterinarian recommended QuercElite to us! Then, I began taking it as sort of a "what the heck, let's see" attitude, but I have not had to take any other antihistamine this year! It does help our dog's itching too, a little bit."

  • Anne W.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    QuercElite for MCAS

    I have been using QuercElite for Mast Cell Activation Syndrome related to mycotoxin illness and long COVID and it has been very helpful. My anxiety and sleep are improved. I also notice that my seasonal allergies are better. I like that this is a small company very dedicated to quality ingredients. Shipping is very fast which I appreciate as well. I also enjoy reading the newsletters and have gotten some great recipes! I also take BrocElite and have recently started CurcElite, both seem to be helping my MCAS and my detox process. I am very happy with all the products I have tried.

  • Connor B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    No More Annoying Rashes

    I've had horrible allergies and overly sensitive skin my whole life, to the point that I'd be freshly bathed and still have a red rash all across my chest and neck. With QuercElite, I'm no longer blotchy and reaching for my anti-itch cream after every shower. 10/10 for sure from me!

  • Kingmo
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    1 year ago
    Good alternative brand of Quercetin

    I've been taking Quercetin for several years. I didn't notice any adverse effects in making the change to this brand. The dosage is slightly lower than what I had been taking, but this one is touted as being more Bioavailable, so perhaps that makes up the difference. This appears to be a good alternative brand.

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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.