Rated 4.5 out of 5 stars

4.5 Stars (12 Reviews)

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Quercetin Synergy

IMMUNE*

Gaia Herbs® Quercetin Synergy is made with Wellemon lemon extract and quercetin to support overall immune health.*
Quercetin is a plant-derived flavonoid that supports a healthy immune response and respiratory health.*
Formulated for multi-pronged wellness support, targeting immune resilience, respiratory function, heart health, and healthy mast cell function.*

Supplement Facts

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Ingredients
Quercetin

Immune Support*

Active Lifestyle

Heart Support*

Vision Support*

OTHER INGREDIENTS

Quercetin, Wellemon® whole lemon fruit extract, Turmeric (Curcuma longa) root extract, vegan capsule (hypromellose), organic pea starch, maltodextrin, and silica.

Gluten, Soy, Dairy
Suggested Use

For optimal results

Adults take 1 capsule twice daily between meals.

Not for use during pregnancy. If you are nursing, have a medical condition, or take medications, please consult with your healthcare practitioner before use. Use only as directed on label. Safety-sealed for your protection. Keep bottle capped at all times and store in a cool, dry place. Store away from children.

Product Benefits

A potent blend of Quercetin, Lemon extract, and Turmeric for comprehensive immune and antioxidant support.*

Helps regulate mast cell function and maintain cardiovascular health for overall wellness.*

Promotes a balanced immune response to support the body's natural defenses.*

The reviews below have been written by users of the product. Gaia Herbs has not verified the accuracy of these statements. The benefits of using Gaia Herbs products vary from person to person and you may not achieve the same results. Posting these reviews should not be seen in any way as an endorsement of the review for accuracy. We reserve the right to remove posts in their entirety that suggest the product may help treat serious disease conditions, could be deemed as harassment, or contain profanity.

Customer Reviews

Total 5 star reviews: 10

Total 4 star reviews: 0

Total 3 star reviews: 1

Total 2 star reviews: 0

Total 1 star reviews: 1

4.5

Rated 4.5 out of 5 stars

Based on 12 reviews

83%would recommend this product

Customers Talked About

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12 reviews

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MD
Michael D. L.
Verified Buyer
8/5/26
Rated 5 out of 5 stars
Very good product in a glass brown jar.
I like this product because it is priced right for me. I noticed it is rated by suppco and was rated quite well. I setup a subscription to what I need. Try it, you will like it!
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Amy D.
Verified Buyer
1/9/26
Rated 5 out of 5 stars
Quercetin Synergy for Immune health
I’ve been taking Quercetin this for the last 5 years during times of weakened immunity or for an immunity boost prior to a trip or being around allot of people!
Gaia’s is the most pure formula I’ve found and I can feel it working! The Tumeric and lemon fruit extract make it a powerhouse combo and easy on the stomach. I have a very sensitive stomach and have no issue with this Gaia formula.
I was buying a different brand on Amazon prior and I don’t think it was a s effective and it bothered my stomach!
Highly recommend!!
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JG
Jill G. c. G.
Verified Buyer
8/23/25
Rated 5 out of 5 stars
Excellent product line
All your products are fantastic, high quality
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95%

said that Gaia Herbs supplements have had a positive impact on their health & wellness.*

16,000+

Five-star reviews

White Gaia Herbs 'G' intertwined with green leaves and flowers on a black background

WELLNESS GROWS HERE

*In a survey conducted of 396 Gaia customers.

Learn More

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Transparency

From Soil to Supplement

Step 1

It all begins with the soil

We believe healthy plants start in healthy soil. To obtain maximum potency from an herb, we plant seeds in micronutrient dense soil sustained by regenerative agricultural practices.

Step 2

Nurture & observe each plant

We allow our herbs to flourish until the right moment to harvest to ensure the purity and potency of each plant. We conduct pre-harvest testing in our on-site laboratory to ensure each ingredient is harvested at peak potency.

Step 3

Extract the whole-plant

Every herb is carefully extracted, without harsh solvents or chemicals, to preserve its beneficial properties.

Step 4

Test for purity & potency

Each product is tested for microbes and heavy metals in our on-site ISO Certified laboratory. When we’re confident each batch is made to a Gaia Herbs standard, they are bottled in our on-site manufacturing facility & sent to you.

Your Questions, Answered

Gaia Herbs® purchases Certified Organic ingredients when possible. We believe supplements should reflect the integrity of the plants themselves. That’s why Gaia Herbs® maintains a “No List” of ingredients we choose not to use – such as artificial fillers and unnecessary additives. We are also continually adding Non-GMO Verified status to many of our products.

This approach helps ensure our formulas stay true to nature and to the values we share with our community. For product-specific organic status, please consult the product label.

Gaia Herbs® uses advanced testing methods, including Gas Chromatography-Tandem Mass Spectrometry, or GC-MS/MS, to help ensure the purity of our raw herbs. This testing supports our comprehensive pesticide surveillance program and is performed using a risk-based approach. For example, USDA Certified Organic ingredients are monitored periodically, while conventionally grown ingredients are tested with every lot.

Gaia Herbs® is committed to sourcing non-GMO ingredients and does not intentionally purchase GMO herbs or materials. We carefully review our sourcing practices to help ensure compliance with non-GMO standards across our products. Many Gaia Herbs® products are also Non-GMO Project Verified®, and that list continues to grow. In addition, all herbs grown on the Gaia Herbs® Farm are Certified Organic and GMO-free.

Gaia Herbs® uses ICP-MS to test arsenic, mercury, cadmium and lead on all lots of incoming ingredients while finished products are tested using a risk-based approach. ICP-MS stands for Inductively Coupled Plasma Mass Spectrometry. This instrument is the centerpiece of Gaia Herbs® ’ heavy metals testing. This powerful technique can observe a wide range of metals at quantities as low as a nanogram of metal in a gram sample.

The ICP-MS allows Gaia Herbs® to obtain precise and sensitive data for all materials in a high-speed manner. Samples are aerosolized and the aerosols are introduced into the plasma. In the plasma, the extreme temperatures cause the aerosols to further atomize and ionize. The ions are then separated by their mass-to-charge ratio using magnetic fields. Finally, the separated ions are quantified using an electron multiplier detector.

We grow and craft every product with your well-being in mind, and we want you to feel fully confident in every purchase. If you’re ever not in love with a Gaia Herbs® product purchased directly from us, just reach out we’ll make it right with a full refund. You can request a refund up to 45 days from the ship date from Gaia Herbs®. Please visit our Satisfaction Guarantee for the full policy and information on starting a return.

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