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The 8 Best bioflavonoid vitamins of 2023

Are you trying to find bioflavonoid vitamins among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling bioflavonoid vitamins on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 28 hours of research and did 87 bioflavonoid vitamins tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best bioflavonoid vitamins you can buy today

SaleNo. 1
Nature's Way Vitamin C 500 mg with Bioflavonoids; 1000 mg Vitamin C per Serving; 250 Capsules
  • ANTIOXIDANT: Vitamin C with Bioflavonoids provides powerful antioxidant protection, supports immune function and strengthens collagen for healthy skin.*
  • SUPERIOR QUALITY STANDARDS: Our Vitamin C 1000 mg with Bioflavonoids is carefully tested and produced to superior quality standards.
  • GLUTEN-FREE: Our Vitamin C 1000 mg with Bioflavonoids is gluten free. It also contains no sugar, salt, yeast, wheat, soy, corn, dairy products, artificial colors, flavors or preservatives.
  • QUALITY GLOBAL SOURCING; BOTTLED AND TESTED IN THE USA
  • SERVING RECOMMENDATION: Take 2 capsule as needed, preferably with food. If pregnant, nursing, or taking any medication, consult a healthcare professional before use.
No. 2
Thorne Vitamin C - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Support Immune System, Production of Cellular Energy, Collagen Production and Healthy Tissue - Gluten-Free - 90 Capsules
991 Consomer Reviews
Thorne Vitamin C - Blend of Vitamin C and Citrus Bioflavonoids from Oranges - Support Immune System, Production of Cellular Energy, Collagen Production and Healthy Tissue - Gluten-Free - 90 Capsules
  • Immune Support: Get the immune-supporting and antioxidant benefits of vitamin C combined with natural citrus flavonoids
  • Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health
  • Wound Healing: Collagen production, antioxidative properties, and immune support make vitamin C an important nutrient for supporting post-surgical healing and injury repair
  • Free From: Doesn't contain gluten, eggs, tree nuts, peanuts, dairy, soy, fish, or shellfish
  • Trusted: Thorne is chosen by champions and trusted by 100+ pro teams. Thorne is the only supplement manufacturer to collaborate with Mayo Clinic on wellness research and content. Thorne is also a proud partner of 11 U.S. Olympic Teams
SaleNo. 3
Solaray Super Bio Vitamin C 1000mg, Buffered, Time Release Capsules with Bioflavonoids, Two-Stage for High Absorption & All Day Immune Support, Vegan, 60 Day Guarantee, 125 Servings, 250 VegCaps
  • Your Immune C: Special complex supplies 1000 mg of vitamin C from rose hips and acerola, plus our bioflavonoid concentrate, intended to support healthy immune system function and glutathione antioxidant production in the body.
  • All-Day Support: Our two-stage time release technology is designed to release half the Vitamin C rapidly & half gradually** throughout the day, which may help extend the availability of vit. C to the body over a longer period of time.
  • Big C Benefits: This powerful antioxidant may also help support collagen synthesis, cartilage and bone development, capillary and blood vessel integrity, nerve impulse transmission and skin health. Plus a base of calcium and magnesium makes our buffered vitamin C easier on the stomach.
  • Eco-Friendly: Committed to a cleaner planet, we use 100% PCR bottles made from plastic removed from oceans & landfills and have partnered with One Million Trees, an organization dedicated to global reforestation.
  • Trusted Brand: We manufacture products and test ingredients in our own state-of-the-art lab in Utah to ensure purity and potency. Because we believe in the quality and efficacy of our products, each bottle comes with a 60-day money-back guarantee.
No. 4
American Health Ester-C with Citrus Bioflavonoids Capsules - Gentle On Stomach, Non-Acidic Vitamin C - Non-GMO, 500 mg, 240 Count (Pack of 1), 120 Servings
5,580 Consomer Reviews
American Health Ester-C with Citrus Bioflavonoids Capsules - Gentle On Stomach, Non-Acidic Vitamin C - Non-GMO, 500 mg, 240 Count (Pack of 1), 120 Servings
  • Ester-c is a breakthrough patented Vitamin C Formula supported with naturally occurring metabolites
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Metabolites help enhance the absorption of Vitamin C by your white blood cells, an important part of your immune system
  • Ester-c's unique, chemical-free manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach. Health Concern: Immune System Support Prenatal Health Beauty Support
  • Patented vitamin c formula supported with naturally occurring metabolites that help enhance the absorption of vitamin c by your white blood cells
  • 24-hour immune support
  • Gentle on the stomach and non-acidic
  • Added citrus bioflavonoid may help your body better absorb and utilize vitamin c
  • Contains no gluten, wheat, lactose, eggs, preservatives, yeast, milk or milk derivatives, soy, grapefruit, sodium or artificial color
No. 5
Solaray Vitamin C & Bioflavonoids 500 mg Each, 1:1 Ratio, Healthy Immune & Antioxidant Support (250 CT, 125 Serv.)
370 Consomer Reviews
Solaray Vitamin C & Bioflavonoids 500 mg Each, 1:1 Ratio, Healthy Immune & Antioxidant Support (250 CT, 125 Serv.)
  • Immune Formula: Antioxidant blend of vitamin C & bioflavonoids may offer powerful immune support
  • Immune Formula: Antioxidant blend of vitamin C & bioflavonoids may offer powerful immune support
  • Your Beauty Supplement: May help support healthy collagen synthesis for vibrant hair, skin & nails
  • ‘C’ More Benefits: May help support healthy cells, blood vessel integrity, cartilage & bone health
  • Eco-Friendly: Committed to a cleaner planet, we use 100% PCR recycled plastic bottles in our product
  • Trusted Brand: Manufactured in our own facility, vegan & lab verified for potency & purity
No. 6
NOW Supplements, Vitamin C-1,000 with 100 mg of Bioflavonoids, Antioxidant Protection*, 250 Veg Capsules
  • ANTIOXIDANT PROTECTION: NOW offers you this yearly supply of vegetarian/vegan Vitamin C-1000 in a convenient easy to swallow capsule. Did you know Vitamin C is essential for the production of collagen. Vitamin C is important for skin, bone, and joint health as well as for supporting the immune system.
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • WITH BIOFLAVONOIDS: One capsule a day packed with vitamin C gives you antioxidant protection and 100 mg of bioflavonoids to support your immune system.
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, kosher, soy free, dairy free, egg free, sugar free, nut free, low sodium, made without gluten, vegetarian/vegan
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SaleNo. 7
NOW Supplements, Vitamin C-1,000 with Rose Hips & Bioflavonoids, Antioxidant Protection*, 250 Tablets (Pack of 1)
  • ANTIOXIDANT PROTECTION: NOW Vitamin C-1000 tablets provide a daily dose of vitamin C needed for the production of collagen and amino acid metabolism
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • WITH ROSE HIPS AND BIOFLAVONOIDS: This unique blend includes rose hips and bioflavonoids, which work synergistically with vitamin C
  • CERTIFICATIONS/CLASSIFICATIONS: Vegan/Vegetarian, Quality GMP Assured, Non-GMO, Soy Free, Kosher
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SaleNo. 8
American Health - Ester-C with Citrus Bioflavonoids - 1000 mg. 90 Caps
4,682 Consomer Reviews
American Health - Ester-C with Citrus Bioflavonoids - 1000 mg. 90 Caps
  • 24-Hour Immune Support; Ester-C delivers 24-hour immune support, so one daily serving of 1000 mg is all you need; As a potent antioxidant, it helps fight free radicals, which can cause oxidative stress that may lead to the premature aging of cells
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Gentle On The Stomach; Ester-C's water-based manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach
  • Optimal Absorption; Added citrus bioflavonoids may help your body better absorb and utilize Vitamin C
  • Naturally-Occurring Metabolites; The naturally-occurring metabolites in Ester-C may help enhance the retention of Vitamin C in your white blood cells, an important part of your immune system
  • "Suitable For Vegetarians & Vegans; No gluten, no yeast, no wheat, milk or milk derivatives, no lactose, no soy, no egg, no grapefruit, no sugar, no artificial flavors, no sodium; Non-GMO "
No. 9
NOW Supplements, Citrus Bioflavonoids 700mg, Supports Immune System*, Cell Defense*, 100 Capsules
  • SUPPORTS IMMUNE SYSTEM*: Among the many attributes of bioflavonoids is their ability to support a healthy immune system response and to promote the maintenance of a healthy vascular system.*
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • WITH ASCORBIC ACID AND RUTIN: This product is enhanced with vitamin C for its synergistic effect.*
  • CLASSIFICATIONS/CERTIFICATIONS: Non-GMO, Kosher Contains Gelatin, Soy Free
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
No. 10
Bluebonnet Nutrition C-1000 mg Plus Bioflavonoids Caplets, Vitamin C 1000 mg, Citrus Bioflavonoids 500 mg, for Immune Health, Soy Free, Gluten Free, Non-GMO, Kosher, Dairy Free, Vegan, 180 Caplets
  • Caplets contain 1000 mg of identity-preserved (IP) Vitamin C, plus Citrus Bioflavonoids
  • Antioxidant Protection Healthy Immune Function
  • 180 Caplets, 180 Servings
  • Soy-Free, Gluten-Free, Non-GMO, Kosher Certified, Dairy-Free, Vegan
  • Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybeans. Also free of yeast, gluten, barley, rice and sugar.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
No. 11
Vital Nutrients - Vitamin C with Bioflavonoids - Vitamin C and Bioflavonoid Formula - 220 Vegetarian Capsules
200 Consomer Reviews
Vital Nutrients - Vitamin C with Bioflavonoids - Vitamin C and Bioflavonoid Formula - 220 Vegetarian Capsules
  • Nutritional Immune Support: High potency ascorbic acid supports the immune system by promoting normal antibody responses and white blood cell function.
  • Promotes Circulatory Health: 55-60% Citrus Bioflavonoid Complex helps support healthy veins and strong, stable capillaries, while Vitamin C promotes absorption of iron needed to build red blood cells.
  • Helps Support Stable Mast Cells: Vitamin C has a stabilizing effect on mast cells of the immune system, which can support healthy histamine levels for men and women.
  • Does Not Contain: This product is free from coatings, binders, gluten (wheat, rye, barley), milk/dairy (casein, whey), soy protein, egg protein, and sugar. Verified by independent testing.
  • We test every ingredient we use and every finished product we make. FDA regulation (GMP Part 111) requires that manufacturers test ingredients and finished products. However, it allows manufacturers to perform minimal “skip lot testing” meaning only some of the ingredients are tested. Vital Nutrients has always exceeded these testing requirements by performing a significant number of additional tests on raw ingredients and finished products at independently certified U.S. labs. Labels may vary.
SaleNo. 12
Sundown Vitamin C Gummies with Rosehips, Citrus Bioflavonoids, Non-GMO, Dairy-Free, Gluten-Free, Vegetarian, 90 Count
9,120 Consomer Reviews
Sundown Vitamin C Gummies with Rosehips, Citrus Bioflavonoids, Non-GMO, Dairy-Free, Gluten-Free, Vegetarian, 90 Count
  • SUPPORTS IMMUNE & GENERAL HEALTH —Vitamin C supports your immune system; also maintains strong bones, teeth, joints, gums, heart health (3)
  • ANTIOXIDANT BLEND — Our unique blend of vitamin C, rosehips and citrus bioflavonoids contain powerful antioxidant properties; may protect your body from cell-damaging free radicals that cause premature aging (3)
  • DELICIOUS CITRUS GUMMIES — No more chalky pills! Take 2 yummy, natural orange-flavored gummies every day to satisfy your daily vitamin C needs
  • CLEAN (1) VEGETARIAN VITAMINS — No gelatin. No corn syrup. No harsh fillers or preservatives. Non-GMO (2) and free of artificial flavors; gluten-free, wheat-free, dairy-free, lactose-free
  • SAFE 250MG DOSAGE — Formulated for maximum effectiveness in adults
  • MADE IN THE USA —with Select Ingredients from Around the World; Manufactured at GMP-Certified Facilities – Sundown and Sundown Kids supplements are manufactured in accordance with good manufacturing practices (GMP). We are a proudly American company with millions of consumers since 1977.
SaleNo. 13
Solgar HY-BIO, 250 Tablets - Antioxidant & Immune Support - Citrus Bioflavonoids, Vitamin C, Rutin & Rose Hips - Non-GMO, Vegan, Gluten Free, Dairy Free, Kosher - 250 Servings
  • Comprehensive Immune Support; Solgar HY-BIO combines 500 mg of Vitamin C with 50 mg rutin, 50 mg rose hips, and 500 mg natural citrus bioflavonoids; Vitamin C is a water-soluble nutrient with revered antioxidant and immune support properties
  • Antioxidant Support; Each single tablet serving of HY-BIO offers potent antioxidant support to combat cell-damaging free radicals; Free radicals can cause premature aging of cells
  • Gluten, Wheat & Dairy Free; Solgar HY-BIO is non-GMO, vegan, kosher, and free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, preservatives and color; Suitable for vegetarians
  • The Gold Standard: For over 70 years, Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SaleNo. 14
Solaray Vitamin C with Bioflavonoid Concentrate 1000mg, Healthy Immune Function, Skin, Hair & Nails Support, 250 VegCaps
1,011 Consomer Reviews
Solaray Vitamin C with Bioflavonoid Concentrate 1000mg, Healthy Immune Function, Skin, Hair & Nails Support, 250 VegCaps
  • Immune Health: May help support healthy immune function & glutathione production, an antioxidant
  • Vibrant Skin & Hair: Formulated w/ Rose Hips, Acerola & Bioflavonoids to support skin & hair health
  • More C Support: May help support collagen synthesis, strong bones, blood vessel integrity & more
  • Bioavailable: Synergistic ingredients’ blend is designed to aid the body’s absorption of Vitamin C
  • Trusted Brand: Manufactured in our own facility, vegan & lab verified for potency & purity
SaleNo. 15
Maxi-Health Max Vitamin C -'1000mg' - with Bioflavonoids - 1000 Tablets - Kosher
211 Consomer Reviews
Maxi-Health Max Vitamin C -"1000mg" - with Bioflavonoids - 1000 Tablets - Kosher
  • ENHANCES Antioxidant protection against cell damage.
  • PURE & POTENT: Combination of high quality vitamins and bioflavonoids.
  • VEGETARIAN, Gluten Free, No Artificial Flavors, Colorings or Preservatives
  • Kosher Certified by the Badatz Eida Charedis, Vaad Hakashrus D'Udvary, and the Orthodox Union
  • SAFE: Made in the USA, Manufactured in an GMP Certified Facility: Maxi Health Was Established in 1974
SaleNo. 16
Solaray Vitamin C 1000mg Timed Release Capsules with Rose Hips & Acerola Bioflavonoids, Two-Stage for High Absorption & All Day Immune Function Support, 60 Day Guarantee (275 Count (Pack of 1))
  • Immune Health: Special formulation containing 1000 mg of vitamin C plus rose hips & acerola bioflavonoids may help support healthy immune function & glutathione antioxidant production.
  • Timed Release Formula: Our two-stage time release technology is designed to release half the Vitamin C rapidly & half gradually for sustained support and may better allow your body to absorb the vitamin.
  • C the Benefits: Vitamin C may also help support antioxidant activity, collagen synthesis, cartilage/bone development, capillary & blood vessel integrity, nerve impulse transmission & skin.
  • Eco-Friendly: Committed to a cleaner planet, we use 100% PCR bottles made from plastic removed from oceans & landfills and have partnered with One Million Trees, an organization dedicated to global reforestation.
  • Trusted Brand: We manufacture products and test ingredients in our own state-of-the-art lab in Utah to ensure purity and potency. Because we believe in the quality and efficacy of our products, each bottle comes with a 60-day money-back guarantee.
No. 18
Puritan's Pride Vitamin C with Bioflavonoids for Immune System Support & Skin Health Capsules
  • Highest quality vitamins and supplements
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Scientifically formulated
  • Helps support immune system health
  • Gluten and Soy Free
  • 3 month supply
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
No. 19
Nature's Way Vitamin C 1000 mg with Bioflavonoids; 1000 mg Vitamin C per serving; 250 Vegetarian Capsules
  • ANTIOXIDANT: Vitamin C with Bioflavonoids provides powerful antioxidant protection, supports immune function and strengthens collagen for healthy skin.*
  • SUPERIOR QUALITY STANDARDS: Our Vitamin C 1000 mg with Bioflavonoids is carefully tested and produced to superior quality standards.
  • GLUTEN-FREE AND VEGETARIAN: Our Vitamin C 1000 mg with Bioflavonoids is gluten free and vegetarian, made with plant-derived capsules. It also contains no sugar, salt, yeast, wheat, soy, corn, dairy products, artificial colors, flavors or preservatives.
  • QUALITY GLOBAL SOURCING; BOTTLED AND TESTED IN THE USA
SaleNo. 20
NOW Supplements, Vitamin C-1,000 with 100 mg of Bioflavonoids, Antioxidant Protection*, 100 Veg Capsules
7,375 Consomer Reviews
NOW Supplements, Vitamin C-1,000 with 100 mg of Bioflavonoids, Antioxidant Protection*, 100 Veg Capsules
  • Ingredients: Cellulose (capsule), Stearic Acid (vegetable source), Magnesium Stearate (vegetable source) and Silica
  • Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
  • Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
  • Serving Size: 1 Veg Capsule; Servings Per Container: 100

How to choose a good bioflavonoid vitamins

Does the idea of finding a fantastic bioflavonoid vitamins make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in bioflavonoid vitamins. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top bioflavonoid vitamins products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top bioflavonoid vitamins on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top bioflavonoid vitamins brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top bioflavonoid vitamins based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the bioflavonoid vitamins were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good bioflavonoid vitamins, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your bioflavonoid vitamins.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting bioflavonoid vitamins for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our bioflavonoid vitamins. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what bioflavonoid vitamins should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on bioflavonoid vitamins.