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Bioflavonoids, also known as flavonoids, are potent plant compounds that work synergistically with vitamin C to offer powerful antioxidant support. Choosing a high-quality supplement can help bolster your immune system, support cardiovascular health, and combat cellular damage. Understanding key factors ensures you select a product that aligns with your wellness goals.
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*
WITH ASCORBIC ACID AND BIOFLAVONOIDS: This product is enhanced with vitamin C for its synergistic effect*
GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product...
Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products
Does this help with vitamin C absorption? Yes — Swanson Citrus Bioflavonoids Complex contains compounds known as bioflavonoids, which aid the absorption of vitamin C for enhanced immune benefits.*
Does this support the immune system? Yes — this dietary supplement offers powerful antioxidant support and aids vitamin C absorption to encourage immune health.*
How potent is this formula? Each capsule delivers a standardized 50% bioflavonoid content for consistent quality and effectiveness in every serving.*
What ingredients are included? Our supplement includes bioflavonoids from bitter orange, along with rose hips extract and acerola cherry for a comprehensive formula.
Can I trust the quality of this supplement? Swanson is a name you can rely on — our products are manufactured to the highest standards, ensuring you get trusted quality, every time.
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...
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, Nut Free, Made Without Gluten, Vegetarian/Vegan
GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product...
Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products
CITRUS BIOFLAVONOID COMPLEX – Created for adults, this citrus bioflavonoid supplement brings together antioxidant-rich compounds from citrus sources, offering a simple and confident way to include bioflavonoids in an active daily routine
ANTIOXIDANT PROPERTIES – Citrus-derived bioflavonoids naturally contain antioxidant compounds found in plant ingredients, making this supplement a focused source of antioxidants valued for their presence in citrus-based formulations
PLANT-BASED FORMULA – This supplement features flavonoids derived from citrus sources in a chewable format with a plant-based ingredient profile, offering a clear and straightforward option focused on citrus-derived flavonoids
CONSISTENT DAILY FORMAT – Presented in a chewable gummy form, this supplement offers a simple alternative to traditional capsules and tablets, providing a predictable format that fits smoothly into everyday routines without complex preparation
FOCUSED INGREDIENT PROFILE – Built around citrus bioflavonoids, this chewable supplement is easy to take to work, while traveling, or throughout the day, offering a practical and consistent option that keeps attention on the core citrus flavonoid...
POWERFUL ANTIOXIDANT DEFENSE & SYNERGY: Go beyond basic support with our multi-faceted, plant-powered antioxidant blend. Quercetin and Rutin are renowned for their ability to neutralize free radicals and provide defense* against* oxidative* stress*. When...
FORMULATED TO SUPPORT CIRCULATORY FUNCTION: Building on our precisely balanced formula, our premium citrus bioflavonoid supplement features a citrus bioflavonoid complex standardized to 50% hesperidin, providing 500 mg of hesperidin per serving. This...
100% NATURAL 3-IN-1 SCIENTIFICALLY BALANCED FORMULA: Unlike synthetic alternatives, Clenoriko 3-in-1 formula is crafted from pure, non-artificial sources: a 1000mg citrus bioflavonoid complex (standardized to 50% Hesperidin) from six citrus fruit...
SIMPLE & CONVENIENT DAILY ROUTINE: Designed for your busy life, each serving includes just 2 small, simple-to-swallow veggie capsules. With 60 servings per bottle (120 capsules total—a full 60-day supply), a single purchase supports your consistent...
PREMIUM QUALITY YOU CAN TRUST: At Clenoriko, we are committed to excellence, purity, and your complete satisfaction in every bottle of our bioflavonoids supplements. We adhere to strict quality standards to ensure every capsule is free from gluten, GMOs...
Immune Support: Vitamin C formulated with natural citrus bioflavonoids for added antioxidant benefits resulting in better cellular protection against free radicals within the body*
Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health and supports healthy tissue and cartilage formation*
Detox Support: Promotes the body's natural ability to eliminate toxins and benefits liver health by helping increase glutathione and other potent antioxidants*
Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)
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?*
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, Nut Free, Made Without Gluten, Vegetarian/Vegan
GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product...
Founded in 1968 by Elwood Richard, NOW is one of the largest independent, family- and employee-owned manufacturers of natural products
3000mg Bioflavonoid Complex: Each serving provides 3000mg of bioflavonoid, including Hesperidin, Quercetin, and lemon bioflavonoids, known for get ear wellness and circulation.
8-In-1 Plant-Based Form: Formulated with 8 plant-based ingredients, including Vitamin B12, Vitamin C, Folate, Magnesium, and Zinc, to overall ear wellness and circulation.
Absorbing Flavonoids in a Fun Gummy: Our bear-shaped gummies, featuring a delicious mixed berry flavor, provide necessary flavonoids in a form that's not only enjoyable for all ages but also designed for optimal absorption.
Clean Plant-Based Ingredients: Vegan, gluten-free, and made with no artificial additives, preservatives, or added sugars for a ear pure and wellness supplement.
120 Gummies Per Bottle: Each bottle contains 120 gummies, offering a 60-day supply of flavonoids (2 gummies per day).
Antioxidant Protection: Natural Factors Citrus Bioflavonoids plus Hesperidin acts in synergy with vitamin C and supports its absorption to provide antioxidant protection*
Rich in Bioflavonoids: Includes citrus bioflavonoids extract from citrus fruits and hesperidin extract from orange to help keep collagen healthy and support capillary strength*
Daily Antioxidant Support: For antioxidant support, take 1 capsule 1–3 times per day or as directed by a health professional*
Non-GMO, Gluten-Free & Dairy-Free: This dietary supplement is free from artificial preservatives, colors, and sweeteners; it is also made to be gluten-free, dairy-free, and non-GMO*
Quality You Can Trust: Family-owned for over 60 years, Natural Factors is committed to creating high-quality supplements backed by rigorous testing; Every batch is third-party tested by ISURA for 800+ contaminants, including pesticides, solvents, and...
Last update on 2026-08-23 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Bioflavonoid Vitamin Supplements
Key Considerations When Purchasing Bioflavonoid Supplements
When selecting a bioflavonoid supplement, consider the following factors to ensure you get the most benefit:
Source and Purity: Look for supplements derived from natural sources like citrus fruits (hesperidin, rutin, quercetin) or other plants. Check the product label for information on the extraction process and any third-party testing for purity and potency. High-quality supplements will clearly state the bioflavonoid profile and ensure it's free from unnecessary fillers or contaminants.
Bioflavonoid Forms and Potency: Bioflavonoids come in various forms, each with potential benefits. Common ones include hesperidin, rutin, quercetin, and diosmin. Pay attention to the dosage of each specific bioflavonoid listed on the supplement facts panel. Ensure the potency is adequate to support your desired health outcomes, often found in combination with Vitamin C for enhanced absorption and effect.
Synergistic Ingredients: Many effective bioflavonoid supplements are formulated with Vitamin C, as these compounds work best together. Vitamin C aids in the absorption and utilization of bioflavonoids, amplifying their antioxidant and immune-supporting properties. Review the ingredient list to see if other beneficial co-factors are included that complement the bioflavonoid profile.
Frequently Asked Questions
What are the primary benefits of bioflavonoid supplements?
Bioflavonoids are known for their strong antioxidant properties, helping to protect cells from damage caused by free radicals. They also play a role in supporting cardiovascular health, improving circulation, and bolstering the immune system, especially when taken with Vitamin C.
Are there any side effects associated with bioflavonoid supplements?
Bioflavonoid supplements are generally considered safe for most individuals when taken as directed. However, some people may experience mild digestive upset. It's always advisable to start with a lower dose and consult with a healthcare professional if you have any concerns or pre-existing conditions.
How should bioflavonoids be taken for best absorption?
Bioflavonoids are often best absorbed when taken with Vitamin C, as they work synergistically. Taking them with a meal can also aid absorption and minimize potential digestive discomfort. Follow the dosage instructions on the product label or as recommended by your healthcare provider.
Can bioflavonoid supplements interact with medications?
Due to their potential effects on circulation and blood thinning, bioflavonoids might interact with certain medications, such as blood thinners. It is crucial to discuss your supplement regimen with your doctor or pharmacist if you are taking any prescription or over-the-counter medications.
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