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Quercetin is a natural flavonoid found in fruits, vegetables, and grains. It has gained attention in recent years due to its potential health benefits, including antioxidant and anti-inflammatory properties.
As a result, quercetin supplements have become increasingly popular among health-conscious individuals looking to support their immune system, improve their cardiovascular health, and deal with seasonal allergies.
However, with so many quercetin supplements available on the market, choosing the right one can be a daunting task.
In this guide, we'll provide you with essential information to help you make an informed decision when buying a quercetin supplement. Here's everything you ever wanted to know about quercetin, plus the top 5 supplements worth trying.
What Is Quercetin?
Quercetin is a natural flavonoid that is found in many plants, fruits, and vegetables. It is a powerful antioxidant that can help to protect your cells from damage caused by harmful molecules called free radicals.
Quercetin has been shown to have anti-inflammatory properties that may help to reduce inflammation in your body, which can contribute to a number of chronic health conditions.
Some research suggests that quercetin may also have antihistamine properties, making it a potentially effective supplement for those who suffer from allergies or asthma.
Additionally, quercetin may improve cardiovascular health by helping to lower blood pressure and cholesterol levels according to some studies, although more research is needed.
Citrus fruits, apples, onions, parsley, sage, tea, and red wine are all fantastic food sources of quercetin, but if you want to give your levels a significant boost, you may also want to consider a supplement.
Quercetin Benefits:
Allergy Relief
Immunity
Energy
Healthy Cells
Antioxidant
Mood
Quercetin Supplements: 2025 Buyers Guide
Quercetin supplements have become increasingly popular in recent years. However, not all supplements are created equal and it can be challenging to know what to look for when selecting a quality product.
Let's take a closer look at some of the top things to consider when it comes to shopping for a quercetin supplement to ensure it will help you achieve your health goals.
3 Things To Look For:
1
Bioavailability
Quercetin is not easily absorbed by the body, so it is important to choose a supplement that contains a highly bioavailable form of quercetin.
The best options are either quercetin dihydrate or quercetin phytosome so we recommend choosing a supplement sourced from them for the best chance of results.
2
Bromelain
Taking quercetin on its own isn't typically great for absorption.
Pairing it with bromelain increases its bioavailability and effectiveness significantly, plus bromelain also offers anti-inflammatory properties of its own, making this a truly powerful combo for fighting free radicals & oxidate stress in the body.
Vitamin C
Vitamin C also helps to boost the potency of quercetin and make it work more effectively.
There is also evidence to suggest that taking vitamin C and quercetin together creates a synergistic antiviral effect because their properties work well together in harmony to fight off viruses & support the immune system.
3
What To Avoid:
Fillers & Additives
When purchasing supplements, it is important to avoid additives, fillers, and bulking agents such as cornstarch, talc & iron oxide, in order to ensure that you are getting a high-quality product that is both safe and effective.
These substances are often added to supplements to reduce the cost of manufacturing, but they can also dilute the potency of the active ingredients and cause adverse reactions in some individuals.
By choosing supplements that are free from these additives, you can be confident that you are getting a pure, high-quality product that will help you achieve your health and wellness goals without any unnecessary risks or side effects
Your Quercetin Supplement Checklist:
GMP Standards
Look for products manufactured to the GMP code of conduct. This is a strict set of manufacturing and quality processes that help to ensure you're getting a premium quality, safe and effective product. This means you should look for a manufacturer which adheres to GMP practices and displays this on their website or packaging.
Money Back Guarantee
It's important that any manufacturer stands behind their product and is willing to give your money back if you aren't happy with the results. Many manufacturers now offer an extended returns policy or 100% satisfaction guarantee for as long as 30 or 60 days. This gives you plenty of time to try the supplement "risk free" to make sure it's what you're looking for.
Our #1 Pick For 2025: Quercetin Complex by Purolabs
For its ultimate 5-in-1 combination of potent antioxidant ingredients, Puro Quercetin Complex is going to be the best bet for most people.
Each capsule delivers a high strength dose of premium quality quercetin dihydrate, plus bromelain, vitamin C, and natural enzymes to ensure superior effectiveness.
This product is also 100% free from sketchy additives, fillers & bulking agents that are commonly found in most supplements.
But what really sets it apart is the truly comprehensive 60 day, 100% satisfaction guarantee - allowing you to try the product risk-free for 60 days to ensure you see the benefits.
Why You'll Love Quercetin Complex:
Packed with research-backed ingredients to help fight inflammation & harmful free radicals.
Made in the United Kingdom to GMP standards & rigorously tested for purity & ingredient quality.
Tasteless, vegan-friendly capsules (no messy powders or drinks!) in a convenient travel-friendly bottle
Our #1 Pick
Purolabs
Quercetin Complex
From £21.66 per bottle
With an ultra clean formula that's 100% free of any fillers or unnecessary ingredients, this product has hundreds of verified 5-star reviews. Feedback from customers is extremely impressive - with many reporting results such as reduced inflammation, increased energy & less seasonal allergies - just to name a few.
Ratings Breakdown
Quality
The commitment to quality is second-to-none. They focus on the highest-quality, most clinically-tested ingredients without the usual additives or fillers commonly found in most supplements.
Quality
The commitment to quality is second-to-none. They focus on the highest-quality, most clinically-tested ingredients without the usual additives & fillers found in most supplements.
Value
You can definitely find quercetin supplements cheaper - but if you want true value for money, we think it's worth the investment in your health.
Value
You can definitely find quercetin supplements cheaper - but if you want true value for money, we think it's worth the investment in your health.
Customer Experience
The website is easy to navigate; the delivery is fast and free; and the items come well-packaged. Customer feedback is excellent.
Customer Experience
The website is easy to navigate; the delivery is fast and free; and the items come well-packaged. Customer feedback is excellent.
Brand
While a relative newcomer, the brand has been on the scene for a couple of years now, slowly building their reputation for quality products with premium ingredients.
Brand
While a relative newcomer, the brand has been on the scene for a couple of years now, slowly building their reputation for quality products with premium ingredients
Perks
The product comes with a truly risk-free 60 day 100% satisfaction guarantee so you can try the product first to ensure it's suitable for you
Perks
The product comes with a truly risk-free 60 day 100% satisfaction guarantee so you can try the product first to ensure it's suitable for you.
Shop Our #1 Pick
Puro Quercetin Complex by Purolabs
Other Options Worth Considering:
This quality supplement from Sharoaid features fisetin and quercetin in combination which are both powerful antioxidants.
It's a liposomal supplement in soft gel form which the manufacturer states offers increased bioavailability. The formula is also non-GMO & free from additives.
This product is also manufactured in the UK to GMP standards. Each bottle contains 240 softgels - enough for last for approximately 3-4 months.
This high quality antioxidant supplement utilises green tea extract, quercetin, and CoQ-10.
The formulation is gluten, lactose, sugar, and soy-free. It is also suitable for vegans and vegetarians.
Just take 1-2 capsules daily as part of your wellness routine to boost your antioxidant levels. Each bottle of 60 capsules costs £30 and lasts for a month.
PureDefense combines essential nutrients like Vitamin C, D3, and Zinc with potent plant extracts including NAC, Elderberry, Quercetin, and the clinically-researched EpiCor® yeast fermentate.
Each serving delivers 450 mg of NAC and 1000 IU of Vitamin D3 to support a healthy immune system and overall wellness. This premium, filler-free formula is non-GMO, vegetarian-friendly, and designed for optimal daily immune support.
Each bottle contains 30 easy-to-take capsules, offering a convenient and effective way to support immune health. This high-quality immune support formula is available for around £26.29.
Solgar Quercetin Complex contains Quercetin in a synergistic formula with Ester-C® Plus to support your immune system.
This non-acidic formula is extremely gentle & stomach friendly. It's also free from artificial ingredients, however sadly there is no money back guarantee.
Solgar recommend taking 2 capsules daily for adults, with each bottle of 100 capsules costing £25 and lasting for approximately 2 months.
Shop Our #1 Pick
Puro Quercetin Complex by Purolabs
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