- Health Supplement for Seasonal Support*: Formulated to support healthy mast cell function during seasonal changes and support immune system health*
- Formulated with Wellemon Lemon Fruit Extract: This immune support supplement features Wellemon lemon extract with bioavailable eriocitrin*
- Premium Ingredients: Formulated with turmeric extract and quercetin for cell health and overall health support*
- About Us: At Gaia Herbs PRO, our ingredients are rigorously tested at our ISO accredited lab (ISO/IEC 17025:2017) to ensure integrity, purity, and potency from batch to bottle
- Discover the Magic of Our Farm: Gaia Herbs operates nearly 270 acres of Regenerative Organic Certified land in North Carolina, growing over 2 million plants each year, representing 20–45 species; anything we don't grow ourselves is sourced from like-minded partners

DebO –
5 Star Supplement!
This has great ingredients for supplemental seasonal immune support. The blend of quercetin, bromelain, and turmeric helps me stay balanced during allergy season without any grogginess. I love how it promotes healthy mast cell function and gives my overall cell health a gentle boost. Gaia Herbs’ commitment to peak-potency ingredients and rigorous testing makes me trust every dose. Clean, effective, natural, and easy to swallow—highly recommend for anyone navigating seasonal shifts!
Paulina –
gaia Herbs Quercetin Synergy 500 Dietary Supplement
When I saw that this Quercetin supplement is made by Gaia herbs, I ordered it without any hesitation. I am thankful that I get to try it because this established brand is known for focusing on quality, and its products are really top notch. It’s one of my most favorite brands, and I’ve tried a number of their supplements. Quercetin is a flavonoid and an antioxidant found in a range of plant foods. I don’t consistently eat anywhere near the variety and abundance of antioxidant fruits and vegetables that I would ideally like to, because it would be just too costly to do so. And while a supplement doesn’t take the place of food, I like having this on hand because I feel it can make a positive difference for me. I also appreciate that this supplement is clearly labeled as non-GMO, and that it comes in a protective amber glass bottle instead of plastic. I love the Quercetin Synergy 500 supplement, and I recommend it.
Stephen Ashley –
Good product, taken between meals
From my wife: the ingredients in this product are really good quality, and they’re gluten-free. I’ve been taking this on and off because it has to be taken between meals and for me that’s very difficult to do consistently. I can’t say that I notice a difference, but that may be because I’m not as consistent as I need to be. Regardless, I think this product has good ingredients and quantities of those ingredients, it’s just having to take it on an empty stomach that I’m finding difficult to do.
Banyon G.Banyon G. –
Best Quercetin Supplement Out There? Could Be….Best Quercetin Supplement Out There? Could Be….
I’ve never been excited about a quercetin supplement, but this just might be my favorite Gaia supplement right now. My brother recently sent me a study which indicates that quercetin promotes neurogenesis (the creation of new neurons) and by enhancing brain plasticity (i.e. helping neurons form new connections, thereby improving brain’s ability to learn and adapt). In this way, quercetin may help to reduce the damage caused by neuroinflammation and improve overall brain health.Add to that Wellemon®, a proprietary lemon fruit extract that is standardized to a specific concentration of the water-soluble flavanone eriocitrin. These types of flavanones have been extensively studied for their effects on cardiovascular health, skin health, immune function, and mitigating oxidative stress,Then there is a small amount of turmeric and curcuminoids (the active compounds found in turmeric) in the formula. These compounds are generally recognized for their antioxidant and anti-inflammatory properties, although the amounts here are low.Gaia is recognized for the high quality of their ingredients, as they grow herbs on their own organic farm acreage. At $64 for 100 pills, this may seem pricey but for the highly specialized nutrition we are getting, I feel it is worth it. I also find these pills easy to take, and to me they are not big. Also I feel no side effects from taking them, but I have been feeling more energy lately (although I am also eating pumpkin seeds which have a good deal of zinc and copper , and that may be helping too).Keep in mind that these pills are to be taken between meals, so space them accordingly. I usually take one in the morning about a half hour before eating, along with my methylated folate.
AquarianDreamsAquarianDreams –
Another top-notch supplement from Gaia Herbs!Another top-notch supplement from Gaia Herbs!
I have tried a whole spectrum of supplements from Gaia Herbs now, and they yet never cease to impress me. Everything that I have received has been high-quality, beautifully presented in a glass bottle, and highly effective. With all of them I have noticed the desired effects within a short period of starting up with them and this one is no exception. Since taking I have felt more alert and energized and have also been sleeping better and easier at night.This supplement is a simple one a day, which is really nice, and the standard sized capsules go down easily. There is no strong taste or smell, and I have had no unpleasant side effects or tummy upset whatsoever, even when taking these on an empty stomach. This is a natural, vegan and non-GMO supplement, all of which I appreciate greatly.At just under $64 for 100 servings, I feel like this is a great deal! I always feel assured that what I get from Gaia Herbs is the real deal and that alone would make this worth more than the current listing price, by far.
J&MJ&M –
Quality Supplement with Trusted IngredientsQuality Supplement with Trusted Ingredients
These Quercetin capsules are easy to swallow and seem to be made with high-quality ingredients. They go down smoothly without any aftertaste, which is not always the case with herbal supplements. The formula includes bromelain and turmeric extract, providing well-rounded immune and seasonal support. Gaia Herbs maintains a reputation for purity. Overall, this is a solid option for those seeking a reliable Quercetin supplement.
R. TurnerR. Turner –
Big bottle lots of Caps, good stuff!Big bottle lots of Caps, good stuff!
I have been using Querctin for years. I have bad allergies and it pretty much stops me from itching, sneezing and having a plugged up nose. I haven’t bought this brand before, but I have heard of it. It’s a large glass bottle with a medium-sized caps. They seem to work as well as my usual brand. It’s a better value than my old too!. You get a lot more! The caps, even while being larger than my old kind, are easy to swallow.