With the buzz surrounding quercetin's potential health benefits, it can be a challenge to identify the best supplement that suits your needs. In this article, we've analyzed our pick of the top five brands on the market, rating them based on key parameters such as purity, bioavailability, price, and customer reviews.
But we're not just comparing brands — we're also diving deep into the science of quercetin. We'll explore how this flavonoid works in the body and discuss its potential health effects. Plus, we'll tackle some common queries about quercetin supplements.
Whether you're a seasoned supplement user or a newcomer to quercetin, this guide offers valuable insights for everyone.
Best quercetin supplement in 2023: shortlist
- Purovitalis — best quercetin supplement overall
- SuperSmart — best quercetin supplement for enzymatically enhanced bioavailability
- Mindbodygreen — best quercetin supplement for immune support
- Solaray — best quercetin supplement for beginners
- Micro Ingredients — best powder quercetin supplement
Choosing the best quercetin supplement for me
Choosing the best quercetin supplement requires consideration of several key criteria:
|Bioavailability||Look for bioavailability enhancements|
|Purity and quality||Third-party testing and GMP certification|
|Dosage||Amount of quercetin in each serving|
|Brand reputation||Consider customer reviews and ratings|
|Price||$0.25-$1.00 per serving|
- Bioavailability. Refers to how well your body can absorb and use the quercetin in a supplement. Some supplements use specific formulations or additional compounds to improve quercetin's bioavailability.
- Purity and quality. The supplement should be free from contaminants and consist of high-quality ingredients. Supplements that have been third-party tested offer a reliable way to verify their quality and purity.
- Dosage. It's important to check the dosage of quercetin in each serving to ensure it aligns with your dietary needs and the recommended intake.
- Brand reputation. Brands with a strong reputation for quality and customer service are generally more trustworthy. Look for brands with positive reviews and transparent business practices.
- Price. Consider the cost per dose of each supplement. The most expensive product isn't necessarily the best, and a lower-cost supplement may offer the same benefits if it meets the other criteria.
Best quercetin supplement products on the market in 2023: an overview
To help you make an informed decision, we've put together an overview of our pick of top five quercetin supplement brands on the market.
We compare them based on key criteria including bioavailability, purity and quality, dosage, brand reputation, and price.
This comparison allows you to gauge which product offers the best value while meeting your specific health needs and budget.
1. Purovitalis — best quercetin supplement on the market
We picked Purovitalis to be one of the best supplement providers on the market, which offers quercetin in a liposomal form. This means the majority of the 125 mg of quercetin per serving makes its way into your bloodstream.
The quercetin itself comes in the form of Saphora japonica extract — the compound is extracted from a natural source, rather than made synthetically.
Purovitalis goes an extra mile with their liposomal formulation. Although the liposomes that the quercetin is encapsulated in are made of soy, the manufacturer guarantees that the soy is GMO-free, addressing those customers who seek GMO-free ingredients.
Lastly, Purovitalis brandishes excellent reviews from their customers. On the other hand, the product is not available from major online retailers, where there is usually more detailed feedback from customers.
A 60-day supply costs $31.42 ($0.52 per serving).
2. SuperSmart — best quercetin supplement for enzymatically enhanced bioavailability
SuperSmart quercetin stands out as a unique solution to the bioavailability issue.
Rather than employing liposomes, SuperSmart achieves great bioavailability for their product through enzymatic modification of quercetin, introducing a natural modification with rutin that directly boosts the way your body internalizes quercetin.
SuperSmart offers their IsoQuercitrin product as being 35%
bioavailable — a marked improvement over the unmodified quercetin, of which
only 2% are absorbed, as the manufacturer claims.
There is 200 mg of this quercetin complex within one serving.
While there are not many customer reviews on independent online retailer websites, the few that are posted indicate that the product works at least as well as any other quercetin supplement.
The supplement is manufactured in the GMP compliant facilities and is tested for hazardous material presence, although the testing is done by the manufacturer, and not a third party.
A 30-day supply of $28.00 ($0.93 per serving).
3. Mindbodygreen — best quercetin supplement for immune support
For people seeking relief from seasonal allergies or the common cold, Minfbodygreen offers Immune support+ quercetin supplement. This a formula of zinc, vitamins C, D3, and beta-glucans.
To address the bioavailability challenge, the manufacturer utilizes quercetin phytosomes showing a higher absorption rate. Mindbodygreen quercetin is derived from Japanese pagoda tree flowers. The ingredients are clean and organic.
Each vegan capsule of this supplement contains 250 mg of quercetin. The recommended daily intake is 2 capsules.Mindbodygreen manufactures its Immune support+ in ISO-certified labs. The products undergo 4 rounds of quality, precision, and safety testing in reputable third-party labs.
A 30-day supply of Mindbodygreen Immune support+ costs $60.00 ($2.00 per serving).
4. Solaray — best quercetin supplement for beginners
Solaray quercetin formulation is a great way to see whether this supplement is for you before exploring bioavailability-enhanced versions of quercetin.
While Solaray does not offer any bioavailability enhancements, the 500 mg per serving is purportedly enough to evoke quercetin effects.
Solaray’s quercetin is made in a GMP-certified manufacturing facility. The supplement’s quality is controlled internally by the manufacturer, forgoing third-party testing.
Customer reviews on independent retailer websites are generally good, although the capsules are reportedly prone to opening within the bottle.
Lastly, as a commitment to customer satisfaction, the company offers a 30-day return policy.
A 45-day supply of Solaray quercetin costs $25.99 ($0.28 per serving).
5. Micro Ingredients — best powder quercetin supplement
Among its wide range of different supplements, Micro Ingredients presents Pure quercetin dihydrate powder. This form of quercetin is considered one of the most bioavailable.
The recyclable, heat and moisture-preventing package of Micro Ingredients contains 500 mg of quercetin from sophora japonica. This pack is enough for 200 servings with 1 scoop (100 mg) serving 3 times daily.
The powder form of quercetin is preferable for people who like adding supplements to their smoothies, morning jogurt, or oatmeal bowl. However, according to several customer reviews, some people may not like the raw taste.
The manufacturer claims to use no additives, fillers, or preservatives in its powder quercetin supplement. The single ingredient in this formula is organic and non-GMO.
The products are tested in third-party testing for purity and quality. The facilities are located in the US, California, yet there is no information about the GMP or ISO certifications.
One pack of Micro Ingredients Pure quercetin dihydrate is sold at $21.95 ($0.13 per serving).
Comparison of the best quercetin supplements
|Brand||Price per serving||Servings in a bottle||Price per bottle||Bioavailability enhanced||Amount of quercetin per serving|
|Purovitalis||$0.52||60|| $31.42||Yes|| 125 mg|
|Solaray||$0.28|| 45||$25.99||No||500 mg|
|Micro Ingredients||$0.14||200||$21.95||Yes||100 mg|
How to choose the right quercetin supplement?
Choosing the right quercetin supplement involves considering its bioavailability enhancements to better absorb it, purity and quality that depends on GMP manufacturing and quality testing, the appropriate dosage that aligns with your dietary needs, the reputation of the brand, and the product's price that you can afford.
Bioavailability enhancements are crucial because quercetin naturally has poor bioavailability, meaning it's difficult for the body to absorb and utilize.
Enhancements can increase the amount of quercetin absorbed, allowing for more effective use and potentially leading to greater health benefits from the supplement.
Purity and quality
Purity and quality are paramount in supplements to ensure you're ingesting what's advertised without harmful contaminants.
High-quality, pure quercetin reduces the risk of side effects and enhances effectiveness.
Third-party testing can confirm purity and quality, providing reassurance about what you're introducing into your body.
The dosage of a quercetin supplement determines how much of the active ingredient you receive per serving. Too low a dosage may not provide the desired health benefits, while an excessively high dosage could increase the risk of side effects.
A suitable dosage aligns with dietary needs and recommended intake.
Brand reputation is important as it reflects a company's commitment to quality, safety, and customer satisfaction.
A reputable brand often implies reliable and transparent manufacturing practices, high-quality ingredients, and effective customer service. It also provides assurance that the product has been thoroughly tested and meets established safety standards.
What is quercetin?
Quercetin is a naturally occurring flavonoid, found abundantly in fruits, vegetables, and grains. It's recognized for its potent antioxidant properties, which may help combat free radical damage.
As an extracted supplement, it's typically used for its purported health benefits. Preliminary studies suggest it could help with:
- Preventing and managing coronary and heart disease.
- Managing allergy symptoms.
- Improving exercise endurance and performance.
- Protecting brain cells from damage through antioxidant properties, potentially lowering the risk of neurodegenerative diseases like Alzheimer's and Parkinson's.
- Reduce inflammation and its associated health problems, including arthritis and chronic pain.
However, these benefits need further confirmation from extensive human trials.
While generally deemed safe, quercetin could potentially cause side effects when consumed in high doses.
Benefits of quercetin supplements
There are several key benefits that are under clinical studies currently, and these include cardiovascular health, allergy relief, athletic performance, brain health, and general inflammation.
Here we will address each of these in greater detail.
Quercetin is believed to support cardiovascular health by enhancing the elasticity of blood vessels, reducing inflammation, and potentially lowering blood pressure.
Its antioxidant properties help combat oxidative stress, a key factor in heart disease.
Additionally, some research suggests quercetin may inhibit the aggregation of platelets, which can decrease the risk of blood clots and related cardiovascular events.
Quercetin is thought to alleviate allergy symptoms by stabilizing mast cells, which release histamine, a primary chemical involved in allergic reactions.
It also has anti-inflammatory properties, which may reduce swelling and inflammation associated with allergies. Thus, quercetin could potentially help manage symptoms such as sneezing, runny nose, and itching.
Quercetin may enhance athletic performance by increasing endurance and reducing fatigue.
It's believed to improve mitochondrial biogenesis in muscle and brain cells, essentially creating more energy powerhouses in these cells. This could lead to better exercise capacity.
Additionally, its anti-inflammatory and antioxidant properties may help speed up recovery after intense workouts by reducing muscle damage and inflammation.
Quercetin can support brain health due to its antioxidant and anti-inflammatory properties. It may help protect neurons from oxidative stress, a factor implicated in neurodegenerative diseases like Alzheimer's and Parkinson's.
Some research suggests quercetin could inhibit the formation of harmful plaques in the brain associated with Alzheimer's disease. Its anti-inflammatory effects might also reduce chronic inflammation, a contributor to cognitive decline.
Quercetin's potent anti-inflammatory properties can help reduce general inflammation. It works by inhibiting the production and activity of pro-inflammatory substances like cytokines and enzymes.
This makes quercetin potentially beneficial in managing conditions associated with chronic inflammation, such as arthritis, heart disease, and certain skin disorders.
Quercetin’s antioxidant properties also help protect cells from damage caused by inflammatory processes.
Best form of quercetin supplement
Quercetin may come in different forms of active compounds. The forms vary mainly due to the need to improve bioavailability without additional heavy expenses in manufacturing. This is because quercetin naturally has poor bioavailability, which makes it difficult for the body to absorb.
The common forms of quercetin include:
- Quercetin dihydrate. A chemically modified form of quercetin supplement increasing its high bioavailability, helping the body absorb and use the supplement.
- Quercetin complex. Includes additional compounds like bromelain, a digestive enzyme derived from pineapples, and vitamin C. These added compounds may enhance the absorption of quercetin into the body.
- Quercetin phytosome. A more recent formulation where quercetin is bound to a type of fat molecule, which further enhances its absorption within the body.
Possible side effects of quercetin supplements
While quercetin supplements are generally considered safe for most people, they can cause side effects in some cases, especially when taken in high doses. These can include:
- Digestive issues. Some people may experience stomach upset, indigestion, acid reflux, or diarrhea.
- Headaches and tingling. Quercetin may cause headaches or a tingling sensation in the arms and legs.
- Kidney damage. Very high doses of quercetin may potentially harm the kidneys.
- Interactions with medications. Quercetin can interact with certain medications, such as antibiotics or blood thinners, potentially affecting how they work.
Always follow the recommended dosage on the product label and discuss with your healthcare provider before starting any new supplement regimen. Pregnant and breastfeeding women should avoid quercetin supplements due to insufficient safety data.
What are natural sources of quercetin?
Quercetin is a flavonoid abundantly present in many natural foods, here are some of them listed:
|Apples||Especially their skins, are an excellent source|
|Onions||Particularly red and white varieties, also contain high levels of quercetin|
|Other fruits||Like berries (blueberries, raspberries) and citrus fruits (oranges, grapefruits) are good sources|
|Vegetables||Like kale, tomatoes, and broccoli|
|Whole grains||Combine them with some herbs, such as sage and American elder|
|Beverages||Like green tea and red wine, known for their antioxidant properties, are also rich in this compound|
Incorporating these foods and drinks into your diet can help you harness the potential benefits of quercetin.
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What is the best quercetin supplement?
The selection of the best quercetin supplement depends on your individual needs, health condition, and other personal factors. However, in our opinion, Purovitalis quercetin might be the best option for its high bioavailability, manufacturing processes, and customer reviews.
What is quercetin supplement good for?
Quercetin supplement has antioxidant and anti-inflammatory properties. It may help improve cardiovascular health by reducing blood pressure and inflammation. It's also believed to provide allergy relief, enhance athletic performance, support brain health, and mitigate general inflammation.
Does quercetin increase testosterone?
Potentially yes, although more research is needed. Some studies suggest quercetin may potentially boost testosterone effects through inhibiting its metabolism, but human studies are lacking. Therefore, it's not yet clear whether quercetin can reliably increase testosterone levels in humans.
How do you take quercetin for best absorption?
To enhance the absorption of quercetin, choose supplements that use formulations improving bioavailability. These might include quercetin dihydrate or complexes that include bromelain or vitamin C. Taking the supplement with a meal containing healthy fats may further increase absorption.
- Trends in Food Science & Technology. Recent advances on the improvement of quercetin bioavailability.
- Nutrition Journal. Red wine and component flavonoids inhibit UGT2B17 in vitro.
- Nutrients. Quercetin, Inflammation and Immunity.
- ACS Omega. Therapeutic Potential of Quercetin: New Insights and Perspectives for Human Health.