10 Best Quercetin Supplements of 2023
If you are looking for the
best quercetin supplement, you've come to the right place. Quercetin is a type of flavonoid present in
many fruits, vegetables, and grains. It’s one of the most abundant
antioxidants in the diet and plays an important role in helping your body
combat free radical damage, which is linked to chronic diseases. In addition,
its antioxidant properties may help reduce inflammation, allergy symptoms, and
blood pressure.
Some doctors are advocating its use against
SARS-CoV-2 (COVID-19), in combination with vitamin C, noting that Quercetin and Vitamin C have synergistic effects.
There are many quercetin supplement brands available out there.
Which one should you buy? Why do we provide so many options below? Many of the
brands do go out of stock on Amazon (this article needs to be updated from
time to time). You may also have your own set of purchasing criteria and it's
likely to be different for different individuals. For example, you might have
a preference for liquid form or powder form or capsule form instead of tablet.
Check out below the best quercetin supplements available online. Where to buy quercetin supplement? Order via the links below and it will be delivered to your designated address by Amazon.
Best Quercetin Supplements 2023
1. Now Foods Quercetin with Bromelain (Now Quercetin with Bromelain Amazon)
SHOP NOW ON AMAZON
Price: From $30.00
Amazon Reviews: 4.8 out of 5. More than 1,900 customer reviews on Amazon.com.
Quercetin Dosage : 400mg
Amazon Reviews: 4.8 out of 5. More than 1,900 customer reviews on Amazon.com.
Quercetin Dosage : 400mg
A two-pack of top notch bromelain-enhanced quercetin from a giant in the
health supplement industry. Reliable quality from a trustworthy brand.
Each capsule contains 400 mg of quercetin and 82.5 mg of bromelain. Do
take note that their suggested usage is 2 capsules twice daily. Meaning
the total daily dosage of quercetin will be 1,600 mg daily.
Now Foods Quercetin supplements contain Bromelain, as some evidence suggests they boost absorption.
BestReviews.com: Not suitable for those with pineapple allergies.
Our Take: If you are looking for best value and are taking it on a long
term basis, this would be your choice.
So as someone who suffers from constant sinus issues , I decided to
try it. I’ve only taken 3 doses and I’m super happy I got it . For
the first time I don’t feel like there is something in my nose
(which my ENT says it’s inflammation I’m feeling ). I’ve had ballon
sinuplasty , endoscopic sinus surgery ,do sinus nasal rinses, had
allergy testing (no allergies at all ) and use Flonase daily &
still felt ‘something ‘ in my nose and often feel sinus pressure.
Well 3 days later I can finally breath without feeling anything in
my nose !!!!
Related: NOW Tests CoQ10 & Quercetin Sold on Amazon
2. Thorne Research Quercenase
Quercenase is a combination of quercetin phytosome and bromelain. Quercetin
phytosome is a new food-grade lecithin-based formulation of quercetin, was
developed to overcome the low bioavailability hurdle of
quercetin. Phytosome complexes are created by a patented process that
binds a botanical extract to a phospholipid (phosphatidylcholine), which
are key components of every cell membrane.
Each capsule contains 250 mg of quercetin phytosome and 100 mg of bromelain.
Cost per capsule: $0.74.
- Promising Effects of 3-Month Period of Quercetin Phytosome® Supplementation in the Prevention of Symptomatic COVID-19 Disease in Healthcare Workers: A Pilot Study (Life, Jan 2022)
- A Randomised Controlled Trial of 152 outpatients with COVID-19 in Pakistan, 76 treated with quercetin phytosome, showed lower mortality, ICU admission, and hospitalization with treatment (International Journal of General Medicine, May 2021)
BestReviews.com: A potent, science backed formulation by a brand known for quality that is made with the purest ingredients for maximum efficacy. However, it is relatively pricier than many similar products on the market.
Amazon Best Sellers: 4.8 out of 5 overall rating with more than 200 customer reviews.
I have histamine intolerance and had spent many years taking prescription and OTC drugs. I wanted to get away from drugs and my functional medicine doctor recommended d-hist. It worked on my allergies but I would get migraines if I took it too often. I think it was the nettles. Anyway, I also didn't like that they used magnesium stearate. I bought this and it works just as well as my Claritin did. I get relief from runny nose and sneezing as well as itchy skin. I will sometimes add some extra bromelain but I am very happy. Thorne products are often more expensive but they use better ingredients and omit questionable ingredients that make production cheaper.Our Take: If you are looking to buy from a reputable brand, this would be your choice.
3. MoxyVites Quercetin 500mg with Bromelain Supplement, Bioactive Phytosome Complex
Moxyvites quercetin complex is a combination of quercetin phytosome
and bromelain. Regular quercetin has poor solubility and low oral
absorption. Moxyvites' technology binds quercetin with a glucose bond
& incorporation of phospholipids into standardized extracts
improving the absorption and bioavailability by 20X. Their complex
delivery system utilizes phytosome technology in which
phytoconstituents react with phospholipids for better and improved
bioavailability.
Another added strength for this product is that it has curcumin as
well, well known also for it's anti-inflammatory and anti-oxidant
effects.
Each capsule contains 250 mg of quercetin phytosome and 80 mg of
bromelain. Cost per capsule: $0.29.
Amazon Best Sellers: #31 Best Seller in Flavonoid Vitamin
Supplements.
Amazon Review: 4.8 out of 5 overall rating.
4. Z-Stack Quercetin 500 mg with Zinc, Vitamin C and Vitamin D3
Where to buy Z-Stack: Z Stack Supplement
Note: To get 5% OFF, please use this coupon code: DRFRANCIS
In an effort to make it easier for his patients, Dr Zelenko has developed an oral supplement that contains four key
ingredients including quercetin (a zinc ionophore) in combination with
zinc, vitamin C and vitamin D3. It’s referred to as 'Z-Stack
Supplement'.
Each capsule contains 250 mg of quercetin, 15 mg of zinc, 2,500 IU of
vitamin D3 and 400 mg of vitamin C. Cost per capsule: $0.83.
Z-Stack Vitamin cocktail provides key ingredients needed in order to
help your body fight off this deadly invader. The Z-Stack Vitamins are
Kosher certified, GMP certified and made in the USA.
Quercetin is a zinc ionophore. Meaning it transports zinc into the cells.
It is known that zinc will slow down the replication of coronavirus through inhibition of enzyme RNA dependent RNA polymerase (PubMed 2010). The COVID-19 virus is a single stranded RNA (RiboNucleicAcid) virus and requires the RNA polymerase to replicate.
Vitamin C and quercetin co-administration exerts a synergistic antiviral action due to overlapping antiviral and immunomodulatory properties and the capacity of ascorbate to recycle quercetin, increasing its efficacy.
Customer Review on ZStackLife:
My father and I have been taking Z Stack for 4 months. My wife has not.
She came down with C-19. I still slept in the same bed with her and
neither my father nor I got sick. She started the protocol and was fine
in a few days. I'm sold on this product. - Feb 4, 2022
Related Evidence:
- What is the Zelenko protocol? The Zelenko COVID-19 Protocol was developed by Dr Vladimir Zelenko. A retrospective study analyzing Dr Zelenko's patient data was accepted for publication in the International Journal of Antimicrobial Agents after a rigorous peer review process. The study finds that early intervention and treatment of high-risk patients with COVID-19 resulted in significantly fewer hospitalizations and deaths. The treatment consisting of zinc, low-dose hydroxychloroquine (HCQ), and azithromycin, is also referred to as "The Zelenko Protocol." Dr Zelenko has since updated his protocols to incorporate new evidence.
5. Amazing Formulas - Quercetin 500 Mg (Best for Vegetarians)
Ratings: 4.7 out of 5 - More than 15,000 global ratings.
Each Amazing Formulas Quercetin capsule contains 500 mg of quercetin
dihydrate. Cost per capsule: $0.17. (120 vegetarian capsules per
container).
I've been sick twice in the past two months, one a mild cold, the other
quite severe, DID NOT GET TESTED so can not attest to Covid 19. Anyway, once I got sick, I took 1000mg of Quercetin, combined with 200mg
of Zinc Picolinate - ANECDOTAL EVIDENCE: I was free and clear of symptoms
in the range of 6 to 10 hours, save for a lingering itch in my sinuses,
which was gone after a good night sleep. Symptoms did not return in either
case. This was ONE DOSE.
Our Take: If you are looking for best value in terms of quercetin suitable for
vegetarians and vegans; and are taking it on a long term basis, this would
be your choice.
6. Doctor's Best Quercetin Bromelain, 180 Veggie Caps
Amazon Best Sellers Rank: #4 in Bromelain Nutritional Supplements
Amazon Best Sellers Rank: #12 in Flavonoid Vitamin Supplements
Ratings: 4.7 out of 5 - more than 3,000 global ratings
- Non-GMO, Vegan, Gluten Free, Soy Free
- Bromelain 3000 GDU per capsule, has 500 Mg of Quercetin with 250 Mg
Bromelain for a Serving size of 2 Capsules
- Quercetin and Bromelain enhances each other's antioxidant and
anti-inflammatory potential. Quercetin is a bioflavonoid that has potent
antioxidants while bromelain works as protein-digesting enzyme.
Bromelain helps increase your body’s absorption and use of
Quercetin.
- Helps support immune health, heart health, joint comfort, healthy
digestions, respiratory health and inflammatory response.
- Quercetin helps ensure appropriate immune response, inhibits
formation of free radicals and promotes circulatory health in part by
supporting the integrity of small blood vessels.
i have sleep apnea and have TO sit up in a recliner to sleep because i can
not use a CPAP. QUERCETIN CLEARS MY SINUS SO BOTH NOSTRILS ARE OPENED WITH
OUT ANY NEGATIVE PHARMCEUUTICAL DRUG SIDE EFFECTS . i now sleep lying flat.
thank you drs best. you formula.
Amazon Best Sellers Rank: #12 in Flavonoid Vitamin Supplements
- Bromelain 3000 GDU per capsule, has 500 Mg of Quercetin with 250 Mg Bromelain for a Serving size of 2 Capsules
- Quercetin and Bromelain enhances each other's antioxidant and anti-inflammatory potential. Quercetin is a bioflavonoid that has potent antioxidants while bromelain works as protein-digesting enzyme. Bromelain helps increase your body’s absorption and use of Quercetin.
- Helps support immune health, heart health, joint comfort, healthy digestions, respiratory health and inflammatory response.
- Quercetin helps ensure appropriate immune response, inhibits formation of free radicals and promotes circulatory health in part by supporting the integrity of small blood vessels.
7. BlueBonnet Super Quercetin
A potent blend of antioxidants and natural ingredients to ease allergies and
boost immune response. Non-GMO and free of common allergens. Contains a
combination of Quercetin, identity-preserved (IP) Vitamin C, Rose Hips,
acerola, citrus Bioflavonoids, Hesperidin, rutin and pineapple bromelain in
vegetable capsules.
Amazon Best Sellers: #21 Best Seller in Flavonoid Vitamin Supplements.
4.8 out of 5 overall rating with more than 190 customer reviews.
Our Take: If you are looking for a potent antioxidant blend, this would be
suitable for you.
8. Natural Factors Bioactive Quercetin
Natural Factors Bioactive Quercetin EMIQ claims to have 40 times better
absorption than ordinary quercetin. Other quercetin supplements here use
bromelain to boost bioavailability, but this supplement uses “EMIQ”, a
proprietary formula made from “Enzymatically Modified
IsoQuercetin”.
Dosage of quercetin is somewhat low (as compared to other brands) in each capsule. However, Natural Factors claims the quercetin is more bioavailable, which means your body gets a strong dose regardless. Each capsule contains 167 mg of EMIQ and 50 mg of vitamin C. Natural Factors claims their formula will provide year-round protection while supporting a healthy inflammatory response and maintaining good sinus and upper respiratory function.
Amazon Best Sellers: #25 Best Seller in Flavonoid Vitamin
Supplements.
4.8 out of 5 - more than 500 global ratings.
Our Take: Best Quercetin for Bioavailability
"I’ve been on quercetin for a long time for bad allergies - the kind
that requires MULTIPLE antihistamines. (Mast Cell Activation Disorder
- basically your body releases too much histamine to too many
stimulus). This quercetin is WAY more potent and WAY more effective
than regular quercetin. I take a lot less of this, and only once a
day, and it really helps my allergies. It’s a little spendy but well
worth it due to it’s effectiveness. Also this is a good brand that I
trust. I’ve been researching and taking supplements for more than 20
years, and this one brand I always feel comfortable recommending to
others."
"This literally took away all of my excessive histamine responses
within a couple of hours. the second day got even better. If you
suffer from allergies or inflammation and would like a natural
option, please consider this." - Sparklebarbie
9. Forest Leaf Quercetin, Bromelain, Stinging Nettle, Vitamin C
Uniquely formulated using a blend of quercetin and bromelain, this
supplement from ForestLeaf may help with sinus relief, allergies,
cardiovascular and respiratory health.
- Advanced Sinus and Allergy Supplement
- Natural Vegetable Capsules
- Non GMO, Dairy, Gluten, Egg and Nut Free
- Every pill contains stinging nettle leaf extract.
- All of its products and pills are tested for maximum absorption.
- 45 servings per bottle, 200mg of vitamin C per serving.
Dosage - 500mg
Ingredients
Vitamin C 200mg, Quercetin 500mg, Stinging Nettle Leaf 500mg, Bromelain
150mg, Vegetable Cellulose (capsule), Microcrystalline Cellulose,
Magnesium Stearate and Silicon Dioxide
I have year round allergies and lately what I had been taking wasn't
working and my eyes were always running. It was extremely annoying and
frustrating to be crying from one eye all day. I read the reviews and
decided to try this. I've been taking them twice a day since March 1st
and I stopped crying the first day. I love these natural pills. They
work!!!!
Ratings: 4.6 out of 5 - more than 2,000 global ratings
10. Vitaraw Quercetin, Zinc, Bromelain, Vitamin C, Vitamin D3
- Immunity Booster, Antioxidant & Anti Inflammatory
The Ultimate Immune Defense by Vita Raw
Quercetin carries anti-aging elements that promote blood sugar levels and
stronger endurance while acting as an anti-inflammatory supplement.
Bromelain is the principal ingredient that enhances the potency and
absorption of Quercetin.
An all-in-one premium daily immune vitamin made with top quality nutrients
at optimal doses. Stay healthy, happy, and energized with a powerhouse
multi-vitamin that naturally strengthen your body's defense system.*
An Advanced Formulation Immune Booster For Adults*
Experience a robust antioxidant for cardiovascular and digestive health
with VitaRaw's Quercetin + Bromelain + Stinging Nettle Root + Vitamin C
with Zinc for adults. Fused with 50 mg of Zinc and 500mg of Vitamin C
& Quercetin that reinforces immunity, strong bones, balanced energy
levels, and proper growth of the body.*
*These statements have not been evaluated by the Food & Drug
Administration. This product is not intended to diagnose, treat, cure or
prevent any disease.
- Gluten-Free & Gelatin-Free
- Vegan & Vegetarian Friendly
- Made With Non-GMO Ingredients
- Safe, Pure, High-Quality Supplements
Quercetin Bromelain with Stinging Nettle Root
- Healthy Digestion & Immune Function Support*
- Strong Antioxidant Properties To Protect The Body From Free Radicals**
- Added Bromelain for Maximum Absorption*
- Maintains General Health*
Dosage (per capsule) : Quercetin 250mg Supplement, Zinc 25mg,
Vitamin C 250mg, Vitamin D3 63mg, Bromelain 75mg
Ratings : 4.6 out of 5 - more than 1,000 global ratings
I started taking this when I began feeling like a cold was coming on.
My throat was really bothering me, I had a bad headache, and I was
sneezing. Quite honestly, I thought it was something worse than I cold
but I remained optimistic. I took the Quercetin immediately and I felt
better in a couple days. From my experience, it seemed to prevent my
symptoms from worsening. My back also feels a little better. I sit a lot
so this supplement might be helping with the discomfort I normally
have.
Quercetin Dosage
Most supplements have a similar dosage, offering 500mg to 1,200mg of quercetin per serving.
In some studies, researchers have given participants up to 5,000mg of quercetin per day with no reported side effects.
Quercetin has poor bioavailability. You might take a 1,200mg quercetin supplement, but your body only absorbs a small percentage of it. That’s why many quercetin supplements contain vitamin C or bromelain, as some evidence suggests they boost absorption.
There’s also some evidence that quercetin has a synergistic effect when combined with other flavonoid supplements. That’s why some quercetin supplements contain resveratrol, catechins, genistein, and other flavonoids.
Quercetin Side Effects
Quercetin is generally recognized as safe. It’s found in many fruits and vegetables, and most people will experience no side effects when taking normal dosages of quercetin.There have been few reported side effects for quercetin supplements.
In some studies, large doses of quercetin (over 1,000mg) were linked with headaches, digestive issues, and tingling sensations. However, these symptoms were mild and uncommon.
Quercetin from food sources is safe for pregnant and breastfeeding women to take. However, there’s limited research on quercetin supplements in pregnant or breastfeeding women.
There’s no evidence that quercetin interacts with any drugs in a significant way. However, you should talk to your doctor before taking quercetin, especially if you are taking antibiotics or blood pressure medication.
Frequently Asked Questions About Quercetin
This section will help to answer some of the most commonly asked questions about Quercetin.What are the best foods for Quercetin?
A: Capers, peppers (yellow and green), onions (red and white), shallots, asparagus, cherries, tomatoes, red apples, red grapes, broccoli, kale, red leaf lettuce, cranberries, blueberries, raspberries, green tea, black tea, and coffee are all excellent foods for quercetin.
On its own, quercetin has a low bioavailability, which means your body absorbs it poorly (Healthline).
That’s why the supplements may include other compounds, such as vitamin C or digestive enzymes like bromelain, as they may increase absorption.
Additionally, some research indicates that quercetin has a synergistic effect when combined with other flavonoid supplements, such as resveratrol, genistein, and catechins.
A new food-grade lecithin-based form of quercetin, Quercetin Phytosome, was developed and validated in healthy volunteers. Quercetin Phytosome
overcomes the low bioavailability hurdle of quercetin and should help to
fulfill the great health benefit potential of this flavonoid in the diet and
as food supplements.
Most in vitro studies used a form of quercetin called 'quercetin aglycone'. However, this particular form of quercetin is never found in the blood, even after ingested, as it it gets changed in the liver.
According to Examine, the quercetin dihydrate form has the apparent best bioavailability followed
by glycosides, aglycone, and finally rutinoside.
Most of the quercetin ingredients on the market are in the quercetin dihydrate
form. Quercetin anhydrous and dihydrate differ in the amount of water they
contain. Quercetin anhydrous contains only 1% to 4% moisture and the sugar
molecules that are attached to quercetin in its natural form have been
extracted. This translates into 13% more quercetin per gram for quercetin
anhydrous vs quercetin dihydrate. For formula manufacturers, this means there
is substantially less bulk per capsule or tablet.
Do you get enough Quercetin in your daily diet?
A: The average person gets 10 to 100 mg of quercetin per day through normal dietary sources. This can vary greatly. Carefully track your diet over an extended period to figure out if you have a dietary deficiency of quercetin.
A: The average person gets 10 to 100 mg of quercetin per day through normal dietary sources. This can vary greatly. Carefully track your diet over an extended period to figure out if you have a dietary deficiency of quercetin.
How much Quercetin should you take per day?
A: Researchers typically use a dose of 500 mg of quercetin per day in supplement form. Most quercetin supplements contain between 500 and 1200 mg of quercetin, although this can vary. Check out the nutritional label for your quercetin supplement to be sure.
Does Quercetin help allergies?
A: Many people take quercetin supplements to avoid allergy symptoms. There’s evidence that quercetin has powerful anti-allergy benefits, although more research needs to be done.
Q: Does Quercetin fight cancer?
A: Early research in test tube and animal models shows that quercetin may have cancer-fighting properties. While these findings are promising, more large scale human studies need to be performed. Research is not definitive. Consult your physician before using any supplement to improve your cancer.
Q: Does Quercetin reduce the risk of Alzheimer’s?
A: Studies show that quercetin may reduce the onset of Alzheimer’s, particularly in the early and middle stages of the condition. However, studies have mostly been performed on mice and test tubes – not in humans.
Q: What are other names for Quercetin?
A: Quercetin goes by a number of different names. You might see quercetin supplements labeled as bioflavonoid concentrate, bioflavonoid extract, or citrus bioflavonoid, for example.
Q: Can Quercetin help you recover after exercise?
A: Some studies show that quercetin boosts recovery after exercise. In some small studies, athletes taking quercetin after exercise had faster recovery than a control group. Researchers believe quercetin reduces oxidative stress and post-exercise inflammation, helping your body recover.
Q: What are the side effects of Quercetin?
A: Most people experience no side effects from quercetin, and any side effects tend to be mild. Quercetin side effects include tingling and numbness, headache, and nausea. Your chance of experiencing side effects increases at higher dosages (over 1,000mg).
Q: Why do so many Quercetin supplements contain bromelain?
A: Bromelain is a naturally occurring, protein-digesting enzyme found in the stem of the pineapple. Bromelain seems to boost the absorption of quercetin by inhibiting inflammatory chemicals called prostaglandins. Bromelain may also decrease inflammation on its own.
Your body doesn’t absorb quercetin very effectively on its own. Some studies
have shown that bromelain boosts the absorption of quercetin, which is why you
find bromelain (or vitamin C) in many quercetin supplements.
Q: What’s the difference between Rutin or Glycosidic Quercetin?
A: Quercetin is found in two forms, including in rutin or glycosidic form. Quercetin glucosides, such as isoquercitrin and isoquercetin, seem to be much more bioavailable and more quickly absorbed than quercetin aglycone or quercetin glycosides, such as rutin (quercetin rutinoside).
Q: Can you overdose on Quercetin?
A: In one study, researchers gave participants 2,000mg to 5,000mg of quercetin per day with no adverse effects or signs of toxicity reported. Generally, quercetin is safe to take even in high doses, although you may experience mild side effects like nausea, digestive issues, and headaches at high doses. Excessively high doses of quercetin could lead to kidney problems.
Q: How much Quercetin should you take for hay fever?
A: Experts recommend taking 400mg of quercetin twice a day between meals for hay fever. Also consult your doctor to help provide a more comprehensive and effective treatment for hay fever.
Q: Can children take Quercetin?
A: Most studies suggest that it’s safe to give quercetin to your child, although you should use only half the dose you'd use on an adult. Talk to your pediatrician before giving any quercetin to your child.
Q: How does Quercetin manage allergy symptoms?
A: Studies have shown that quercetin stabilizes mast cells that release histamine. Histamine is the principal mediator of reactions to pollen and other allergies. This makes quercetin a natural antihistamine. Many people use quercetin to treat symptoms of hay fever, including runny nose, watering eyes, and itching.
Q: Can you take too much Quercetin?
A: You should start with a quercetin dosage of around 500mg per day to assess your tolerance. However, researchers have given participants up to 5,000mg of quercetin per day with few reported side effects. Look for symptoms like upset stomach and diarrhea. Excessively high doses of quercetin could lead to kidney problems.
Q: Who should not take a Quercetin supplement?
A: Quercetin appears safe for anyone to take when used in normal dosages. However, there’s limited research on how quercetin supplements affect women who are pregnant or breastfeeding. People with high blood pressure, or anyone taking blood pressure medication, may also want to take to their doctor before taking a quercetin supplement.
Q: Can you take a Quercetin supplement with a pineapple allergy?
A: If you’re allergic to pineapples, you should avoid quercetin supplements with bromelain. Bromelain, an enzyme in pineapples, is added to quercetin supplements to boost bioavailability. Overuse of bromelain can create problems for consumers.
Q: Does Quercetin work for Anti-Aging?
A: Several studies have examined the effect of quercetin on aging. Quercetin is rich with anti-inflammatories and antioxidants, which could make it a powerful anti-aging compound.
Q: Does Quercetin help asthma?
A: Quercetin may help asthma by relaxing smooth muscles lining the airway, improving airway flow.
Q: What’s better – Quercetin tablets, capsules, powders, or liquid?
A: Quercetin liquid claims to be more bioavailable than other sources of quercetin. You take the liquid sublingually (underneath your tongue). However, limited research shows quercetin capsules or powders are more effective, and all forms of quercetin are absorbed poorly by the body.
Q: Where does Quercetin come from?
A: Most supplement companies use various plant or vegetable-based sources of quercetin. Check the label.
Q: Can you get citrus-free Quercetin?
A: Some quercetin supplements are specifically marketed as citrus-free, making them ideal for those with citrus sensitivities. Read the label or official product website for your supplement to be sure that it is actually citrus-free.
Q: Does Quercetin help with diabetes?
A: There’s some evidence that quercetin helps with diabetes, helping your body manage blood sugar levels during fasting. However, more research needs to be done to verify these benefits.
Q: Is Quercetin Non-GMO?
A: Quercetin supplements are generally labeled non-GMO. Check the label to verify your quercetin supplement is not made from genetically modified ingredients.
Some people take quercetin supplements for allergies. Others take it to boost the immune system. Others take quercetin for general anti-aging or health and wellness.
Early research on quercetin is promising, and new human studies are released every year validating certain quercetin benefits.
Q: What’s the difference between Rutin or Glycosidic Quercetin?
A: Quercetin is found in two forms, including in rutin or glycosidic form. Quercetin glucosides, such as isoquercitrin and isoquercetin, seem to be much more bioavailable and more quickly absorbed than quercetin aglycone or quercetin glycosides, such as rutin (quercetin rutinoside).
Q: Can you overdose on Quercetin?
A: In one study, researchers gave participants 2,000mg to 5,000mg of quercetin per day with no adverse effects or signs of toxicity reported. Generally, quercetin is safe to take even in high doses, although you may experience mild side effects like nausea, digestive issues, and headaches at high doses. Excessively high doses of quercetin could lead to kidney problems.
Q: How much Quercetin should you take for hay fever?
A: Experts recommend taking 400mg of quercetin twice a day between meals for hay fever. Also consult your doctor to help provide a more comprehensive and effective treatment for hay fever.
Q: Can children take Quercetin?
A: Most studies suggest that it’s safe to give quercetin to your child, although you should use only half the dose you'd use on an adult. Talk to your pediatrician before giving any quercetin to your child.
Q: How does Quercetin manage allergy symptoms?
A: Studies have shown that quercetin stabilizes mast cells that release histamine. Histamine is the principal mediator of reactions to pollen and other allergies. This makes quercetin a natural antihistamine. Many people use quercetin to treat symptoms of hay fever, including runny nose, watering eyes, and itching.
Q: Can you take too much Quercetin?
A: You should start with a quercetin dosage of around 500mg per day to assess your tolerance. However, researchers have given participants up to 5,000mg of quercetin per day with few reported side effects. Look for symptoms like upset stomach and diarrhea. Excessively high doses of quercetin could lead to kidney problems.
Q: Who should not take a Quercetin supplement?
A: Quercetin appears safe for anyone to take when used in normal dosages. However, there’s limited research on how quercetin supplements affect women who are pregnant or breastfeeding. People with high blood pressure, or anyone taking blood pressure medication, may also want to take to their doctor before taking a quercetin supplement.
Q: Can you take a Quercetin supplement with a pineapple allergy?
A: If you’re allergic to pineapples, you should avoid quercetin supplements with bromelain. Bromelain, an enzyme in pineapples, is added to quercetin supplements to boost bioavailability. Overuse of bromelain can create problems for consumers.
Q: Does Quercetin work for Anti-Aging?
A: Several studies have examined the effect of quercetin on aging. Quercetin is rich with anti-inflammatories and antioxidants, which could make it a powerful anti-aging compound.
Q: Does Quercetin help asthma?
A: Quercetin may help asthma by relaxing smooth muscles lining the airway, improving airway flow.
Q: What’s better – Quercetin tablets, capsules, powders, or liquid?
A: Quercetin liquid claims to be more bioavailable than other sources of quercetin. You take the liquid sublingually (underneath your tongue). However, limited research shows quercetin capsules or powders are more effective, and all forms of quercetin are absorbed poorly by the body.
Q: Where does Quercetin come from?
A: Most supplement companies use various plant or vegetable-based sources of quercetin. Check the label.
Q: Can you get citrus-free Quercetin?
A: Some quercetin supplements are specifically marketed as citrus-free, making them ideal for those with citrus sensitivities. Read the label or official product website for your supplement to be sure that it is actually citrus-free.
Q: Does Quercetin help with diabetes?
A: There’s some evidence that quercetin helps with diabetes, helping your body manage blood sugar levels during fasting. However, more research needs to be done to verify these benefits.
Q: Is Quercetin Non-GMO?
A: Quercetin supplements are generally labeled non-GMO. Check the label to verify your quercetin supplement is not made from genetically modified ingredients.
Wrapping It Up
Quercetin is a bioflavonoid with potent antioxidant and anti-inflammatory effects. Many take quercetin supplements daily to support various body systems.Some people take quercetin supplements for allergies. Others take it to boost the immune system. Others take quercetin for general anti-aging or health and wellness.
Early research on quercetin is promising, and new human studies are released every year validating certain quercetin benefits.
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