Introduction

Quercetin is a natural food polyphenol with potential effectiveness in decreasing weight gain and obesity. It is found in fruits and vegetables, including onions, apples, and kale.

Studies have also revealed that quercetin may be advantageous in diminishing the risk of heart disease, cancer, and stroke.

Quercetin is found in the peel of apples, but you can maximize your input by consuming the whole fruit rather than drinking apple juice.

The peels have an increased concentration of quercetin than the flesh. So if you eat the whole apple rather than just consuming its juice, your body absorbs more.

The best quercetin plus supplement in Spain is an antioxidant that resists free radicals in the body. Free radical impairment has been linked to cancer and heart disease. It also allows you to increase your immune system and decrease inflammation.

Onions, citrus fruits, and tea also contain quercetin. It is sold in the form of capsules or tablets under different brand names as a dietary supplement.

The best quercetin supplements in Spain are much more potent than the quercetin you encounter naturally in food sources. Therefore, take quercetin pills to decrease the risk of cancer and heart disease.

Quercetin Plus Supplements in Spain

Our pick of the 6 best quercetin supplements of 2024 in Spain

Zotezo Score
Best Quercetin Plus Supplements
Lowest Price

A+

€38.10

€30.63

A

€44.15

€35.07

B+

€28.97

€28.97

B+

€24.99

€24.99

B+

€31.37

€31.37

B

€18.38

€18.38

Let's take a deep dive into these 6 best Quercetin Plus Supplements in Spain

Best Overall Quercetin Plus Supplements in Spain

SM Importador de Productos Dieteticos S.L

A+

Zotezo review

The Solaray Mega Quercetin is a recommended product for allergies, backed by positive reviews from customers and medical professionals. However, it may not completely eliminate allergy symptoms and may not be as effective as traditional antihistamines.

Product details

  • Solaray brand

  • Manufactured in the United States

  • Guaranteed identity, purity, and potency

  • Contains 60 VegCaps

  • Address: C/Bruc 99 08203 - Sabadell - Barcelona

  • Not to be used as a substitute for a varied diet

Benefits of Solaray Mega Quercetin VegCaps

  • Recommended for allergies

  • Positive reviews from customers

  • Recommended by medical professionals

Drawbacks

  • Allergy symptoms may not disappear completely

  • May not be as effective as traditional antihistamines

A

Zotezo review

The Solgar Quercitina Complex con Ester-C Plus Cápsulas vegetales is a highly effective product that provides relief for allergies and is suitable for individuals with various dietary restrictions. However, the limited information on how it specifically improves allergies and whether it completely resolves them may be a drawback for some users.

Product details

  • Immune system support

  • Patented vitamin C formula for gastrointestinal comfort

  • Protection against oxidative damage

  • Contains quercetin and bromelain

  • Suitable for vegans, vegetarians, and kosher diets

Benefits of Solgar Quercitina Complex –...

  • Effective for allergies

  • Provides relief

  • Suitable for various dietary restrictions

Weaknesses

  • Limited information on how it specifically improves allergies

  • Unclear if it completely resolves allergies

B+

Zotezo review

The Quercetina 500 mg capsules by Zenement are a highly effective and potent supplement, thanks to their high Quercetin content and the addition of Bromelain for enhanced absorption. While the product is vegan-friendly, it may be limited in availability and comes at a higher price point compared to similar products.

Product details

  • High Quercetin Content: The Quercetina 500 mg capsules contain a concentrated extract of Saphora Japonica flowers, providing a 95% Quercetin content. This high concentration ensures maximum effectiveness and benefits for the body

  • Enhanced with Bromelain: In addition to Quercetin, these capsules are fortified with Bromelain, a natural enzyme derived from pineapple. Bromelain has been shown to enhance the absorption and bioavailability of Quercetin, maximizing its antioxidant and anti-aging properties

Benefits of Quercetin 500mg with Bromelain, ...

  • High Quercetin Content

  • Enhanced with Bromelain

  • Vegan capsules

Disadvantages

  • Limited availability

  • Higher price compared to other similar products

B+

Zotezo review

The Trans Resveratrol Natural supplement offers a high potency of 510mg per capsule, derived from premium sourced ingredients such as Japanese Knotweed and Red Wine Grape Skin Extract. With the added benefit of Black Pepper extract for enhanced absorption, this product provides a reliable and natural source of antioxidants to support overall health and well-being. However, it is worth noting that availability may be limited in certain regions and the price point is higher compared to other similar products.

Product details

  • High Potency: The Trans Resveratrol Natural supplement offers a high potency of 510mg per capsule, ensuring a concentrated dose of beneficial antioxidants that can support overall health and well-being

  • Premium Sourced Ingredients: This product is formulated with a blend of 98% Japanese Knotweed and Red Wine Grape Skin Extract, both known for their rich resveratrol content. These premium sourced ingredients provide a reliable and natural source of antioxidants

  • Enhanced Absorption: The inclusion of Black Pepper extract (Piperine) in this supplement helps enhance the bioavailability and absorption of trans resveratrol, allowing for optimal utilization by the body. This feature ensures maximum effectiveness and efficiency of the supplement

Benefits of High-Potency Trans Resveratrol C...

  • High potency of 510mg per capsule

  • Premium sourced ingredients

  • Enhanced absorption with Black Pepper extract

Negatives

  • Limited availability in certain regions

  • Higher price point compared to other similar products

B+

Zotezo review

The Quercetina 1000 mg product is a high-quality, vegan supplement that contains 1000 mg of Quercetin per capsule. It offers a 3-month supply and is made from a concentrated natural extract of Sophora Japonica flowers. With its 95% Quercetin content, it acts as a cellular antioxidant and natural anti-inflammatory. It is also effective for relieving headaches and provides good value for money.

Product details

  • Contains 1000 mg of Quercetin per capsule

  • Vegan capsules

  • Provides a 3-month supply

  • Made from a concentrated natural extract of Sophora Japonica flowers

  • Contains 95% Quercetin

  • Acts as a cellular antioxidant and natural anti-inflammatory

Benefits of Quercetin 1000mg Vegan Capsules ...

  • Effective for relieving headaches

  • Good quality product with no harmful ingredients

  • Reasonable price and good value for money

B

Zotezo review

The Solgar Quercitina Complex con Ester-C Plus Cápsulas vegetales is a reasonably priced and high-quality product that offers immune system support, improved digestion, and relief from allergy symptoms. However, it may not be suitable for those without a quercetin deficiency and lacks clear dosage instructions.

Product details

  • Immune system support

  • Patented form of vitamin C that does not cause gastrointestinal discomfort

  • Protection against oxidative damage

  • Contains quercetin and bromelain

Benefits of Solgar Quercitina Complex Capsul...

  • Helps improve digestion

  • Provides relief from allergy symptoms

  • Reasonable price and good quality

Drawbacks

  • No clear instructions on dosage

  • May not be suitable for individuals without a quercetin deficiency

Tips for choosing the right quercetin supplements for you

There is a lot of research required to choose the best quercetin plus supplements in Spain. We have made it easier for you. First, learn about the main factors you should check while buying.

Dosage and potency

The precise dose relies on the strength, form and brand of the quercetin supplement you buy. Generally, two capsules a day is suggested. Read the instructions on the label with due care before fixing on dosage.

Potency can also alter, but most capsules range from 500 to 1,200 milligrams. Many brands suggest taking quercetin supplements with a glass of water. It helps your body absorb the compound faster.

Form

The best quercetin plus supplements in Spain are normally available in capsule or tablet form. However, if you do not like taking pills, you can buy the supplement in powder or liquid form.

You can add the powder or liquid to a drink or mix it into food. Some brands also trade quercetin in a chewable or gummy form, a great option for kids.

Vegan

Some capsule casings contain gelatin, which is an animal by-product. If you obey a vegetarian diet, look for supplements especially labelled vegan.

If you have no idea about the capsules, liquid and powder quercetin supplements are always entirely plant-based options.

Additional ingredients

Certain quercetin supplements contain additional ingredients in their formula to expand their antioxidant and anti-inflammatory properties.

Some supplements incorporate bromelain, an enzyme that enhances absorption, while other formulas comprise recognizable ingredients like vitamin C.

Products listed here are carefully reviewed and tested by our expert authors and reviewers. If you buy through links on this page, we may earn a small commission. Here’s our editorial process.

How we reviewed these products

Benefits of using quercetin supplements

Reduces Inflammation

Inflammation is your body’s natural reaction to stress and injuries. It usually helps your body heal. However, chronic inflammation can be dangerous to your body and contribute to health conditions.

However, quercetin might support reducing inflammation. One study trusted Source on animals found that quercetin controlled both acute and chronic inflammation, complementing to show anti-arthritis properties.

Results from human studies have provided mixed results. For example, while research-Trusted Source on healthy male athletes saw that quercetin could lower inflammation, it did not have the same effect in women with rheumatoid arthritis.

Prevents neurological diseases

The best quercetin plus supplements in Spain may aid control neurodegenerative diseases, such as Alzheimer’s or Parkinson’s disease.

Oxidative stress contributes to the growth of neurodegenerative diseases. Oxidative stress happens when there is an imbalance of free radicals in the body. The antioxidant effects of quercetin may support the fight against free radicals.

Research on rats demonstrated that quercetin could guard against oxidative stress. It also showed quercetin could guard against the harmful effect of certain metals on the nervous system.

Reduces cancer risk

Quercetin may have anticancer properties that might prevent the spread of cancerous cells and tumour growth. ResearchTrusted Source has revealed that a diet heightened in flavonoids, such as quercetin, can help avert cancers. Fruits and vegetables are full of flavonoids, so raising the intake of these foods might lower the risk of many types of cancer.

A 2015 report found that quercetin delayed the growth of prostate cancer cells in mice and rats. A 2018 in vitro study trusted source showed that quercetin exhibited promise in both the treatment and deterrence of prostate cancer. 

In vitro means the researchers experimented outer of a living thing, for example, in a test tube. Researchers are still required to find out more about the anticancer properties of quercetin in humans and to confirm whether the body can absorb high doses of quercetin effectively.

Reduces the risk of heart diseases

Diet plays a vital role in diminishing the risk of cardiovascular diseases, such as heart disease and strokes. As fruit and vegetables possess flavonoids, consuming more of them can decrease the risk of these diseases.

Quercetin may be a better-trusted source of blood vessel cell health and blood flow via arteries in people with heart disease.

Eases allergy symptoms

The best quercetin plus supplements in Spain have anti-inflammatory properties that may provide allergy symptom relief.

Test-tube and animal studies discovered that it blocks enzymes concerned with inflammation and suppress inflammation-promoting chemicals, such as histamine. One study revealed that taking quercetin supplements concealed peanut-related anaphylactic reactions in mice.

Still, it’s vague whether the compound has the same effect on allergies in humans, so more research is required before it is recommended as an alternative treatment.

Side-effects of using Quercetin Plus Supplements

Quercetin supplements may cause mild side effects in some people. These can include upset stomach, nausea, diarrhea, or Headache. Some folks might also experience tingling sensations or dizziness. It’s essential to start with a low dose and gradually increase it to see how your body responds. If you notice any uncomfortable symptoms, stop taking it and talk to a doctor. Always read the instructions and consult a healthcare professional before starting any new supplement to ensure it’s safe for you.

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Frequently asked questions on quercetin supplements

1. What is the most bioavailable form of quercetin?

2. How long can you safely take quercetin?

3. Should quercetin be taken on an empty stomach?

4. Does quercetin affect sleep?

5. Does quercetin cause weight gain?

6. Who should not take quercetin?

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Conclusion

The best quercetin plus supplement in Spain is one of the most abundant antioxidants in the diet. It plays an important role in helping your body combat free radical damage linked to chronic diseases.

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Dt. Mary Ahern

MS, RD

Dietitian verified

Mary Ahern, MS, RD is a registered dietitian and health writer who is passionate about plant-based nutrition and achieving better health by balancing time between the kitchen and the gym. Currently she's pursuing PhD from University of Arizona