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 USA 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 USA 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.
Our pick of the 8 best quercetin supplements of 2024 in USA
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Let's take a deep dive into these 8 best Quercetin Plus Supplements in USA
Best Overall Quercetin Plus Supplements in USA
KAPPA NUTRITION
A+
Zotezo review
The “(90 Capsules), Quercetin 1,000mg, Vitamin C 1,000mg, Zinc 50mg, Vitamin D3 5,000iu, Selenium, Copper, Acerola, Ginger, Rutin, Bitter Orange, Rose Hips, Echinacea, Immune C Plus, 12 in 1 Immune C Plus” supplement offers high potency and superior absorption to boost the immune system effectively. However, the product may not be suitable for those who prefer fewer capsules or do not require all the included ingredients.
Product details
Benefits of Immune C Plus Supplement by Bran...
Drawbacks
A+
Zotezo review
The Solgar Quercetin Complex with Ester-C Plus is a powerful immune health support supplement with antioxidant properties. Despite some reports of bottle breakage in initial shipments, its synergistic formula, effectiveness against allergies, and absence of side effects make it a favorable choice for those seeking immune support.
Product details
Benefits of Solgar Quercetin Complex with Es...
Weaknesses
Doctor’s Best, Inc
A+
Zotezo review
The Doctor’s Best Quercetin Bromelain capsules provide excellent support for digestion and immunity, making them a great choice for those looking for a vegan, gluten-free, and soy-free supplement. However, users should be aware of potential side effects such as dry mouth and increased urination, as well as the risk of kidney damage at high doses.
Product details
Benefits of Doctor’s Best Quercetin Br...
Disadvantages
Nature's Plus
A+
Zotezo review
NaturesPlus Quercetin Plus with Vitamin C & Bromelain offers a potent combination of immune-boosting ingredients in a gluten-free, vegetarian formula. While effective in supporting the immune system, fighting the common cold, and reducing inflammation, some users may find the large tablets challenging to swallow, and the product may be considered pricey compared to alternatives.
Product details
Benefits of NaturesPlus Quercetin Plus ̵...
Negatives
MVStudio Products LLC
A+
Zotezo review
This Quercetin supplement with Bromelain, Vitamin C, and Zinc offers immune support with organic ingredients in a convenient 180-count bottle. However, some users may experience poor absorption and find the daily dosage of 2 capsules inconvenient.
Product details
Benefits of Immune Support with Quercetin &#...
Cons
Natura Health Products
A+
Zotezo review
The Natura Health Products Quercetin Plus Supplement is a high-quality immune support supplement that effectively helps with allergies. While it has an earthy smell due to the nettle leaf ingredient and is limited to 90 capsules per bottle, its benefits as a mast cell stabilizer with added Bromelain, Vitamin C, and Quercetin make it a valuable addition to maintaining overall health.
Product details
Benefits of Natura Health Quercetin Plus Sup...
Drawbacks
Clean Nutraceuticals
B+
Zotezo review
This lung immune defense support supplement provides strong immune system support with a good mix of ingredients, including Quercetin, Zinc, Vitamin C, Vitamin D, Bromelain, and Elderberry. While easy to swallow, some users may find the product’s unpleasant smell and strong odor off-putting.
Product details
Benefits of Lung Immune Defense Support
Weaknesses
B+
Zotezo review
The VHC NAC Supplement offers an optimum dose of N-Acetyl-L-Cysteine and Quercetin to support respiratory health, liver health, and boost the immune system. However, it may not be suitable for individuals with specific allergies or sensitivities, and some users may find the packaging cumbersome. Overall, a solid choice for those looking to enhance their overall health in the USA.
Product details
Benefits of VHC NAC Supplement Plus Quercetin
Disadvantages
Tips for choosing the right quercetin supplements for you
There is a lot of research required to choose the best quercetin plus supplements in USA. 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 USA 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.
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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 USA 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 USA 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 USA 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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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
