Bioflavonoids are natural substances found in citrus fruits, black currants and rose hips. While they are not essential nutrients, bioflavonoid supplements are taken to treat certain conditions including hemorrhoids, chronic venous insufficiency, osteoarthritis, nosebleeds and leg ulcers. Although bioflavonoids found in food are safe, if you take them as a supplement, there are potential side effects, so they're not recommended for everyone. Consult your doctor before taking any over-the-counter supplement.
Bioflavonoid Side Effects
Side effects from taking bioflavonoids may vary and do not always require medical attention, according to Drugs.com. If you're concerned about the symptoms you are experiencing, call your doctor immediately. Common side effects associated with bioflavonoid supplementation include blurred vision, dizziness, ache or heaviness in the legs, headache, nervousness, swollen feet, ankles or knees, pounding in the ears, itchy skin around damaged veins, red or scaly skin or a change in heart rate.
You should not take bioflavonoids if you are taking calcium channel blockers or tamoxifen. Calcium channel blockers, such as nifedipine or diltiazem, are medications used to manage high blood pressure, angina or an irregular heartbeat. Bioflavonoid supplementation may increase blood levels of calcium channel blockers, requiring a decrease in dosage. Taking bioflavonoids with tamoxifen, a medication used to treat breast cancer, may decrease its effectiveness.
If You're Pregnant or Nursing
If you're pregnant or nursing, you should not take bioflavonoid supplements because it is not known how these supplements affect your baby. The New York University Langone Medical Center warns that bioflavonoid supplementation in pregnant women may increase risk of infant leukemia. While the evidence for safety and harm on pregnant women and their babies is limited, precaution is still recommended.
Bioflavonoid Supplement Safety
Bioflavonoids are sold as an herbal supplement, and dosages are determined by the manufacturer, not the Food and Drug Administration. While herbal supplements like bioflavonoids are regulated for purity and proper labeling by the FDA, they are not held to the same standards as prescription medications and may contain countless other ingredients.
Get Your Bioflavonoids From Food
If you want to increase your bioflavonoid intake without the concern for potential side effects, you may be better off getting them from the food you eat. Making citrus fruits, such as oranges, grapefruit or lemons, a regular part your day is an easy way to up your bioflavoniod intake. You can also add bioflavonoid by sprinkling parsley on your food. Drinking black tea can help you get more bioflavonoids in your diet as well. Other food sources include blueberries, cranberries and onions.
- Drugs.com: Bioflavonoids
- New York University Langone Medical Center: Citrus Bioflavonoids
- Drugs.com: Bioflavonoids Side Effects
- Texas Heart Institute: Calcium Channel Blockers
- Proceedings of the National Academy of Sciences: Dietary Bioflavonoids Induce Cleavage in the MLL Gene and May Contribute to Infant Leukemia
- National Center for Complementary and Alternative Medicine: Using Dietary Supplements Wisely
- U.S. Department of Agriculture: Sources of Flavonoids in the U.S. Diet Using USDA's Updated Database on the Flavonoid Content of Selected Foods
- Photo Credit miriamvandamme/iStock/Getty Images
Iron Supplements Side-Effects
Iron is an element naturally occurring in both nature and in our bodies. Iron is most abundant in our red blood cells...
Treatments for Inner Ear Problems
Because disorders of the inner ear are varied, the treatments to help calm them are numerous as well. Oftentimes, solving a problem...
You're probably aware that most plant-based foods are healthy choices because they contain vitamins, minerals and dietary fiber. But these foods also...
Side Effects of Lipo-flavonoid
Lipo-flavonoid is a multivitamin that derives its ingredient from the rind portion of some citrus fruits that contain bioflavonoids. Bioflavonoids aid in...
Lipoflavonoid Side Effects
Lipoflavonoid is a type of multivitamin. A multivitamin basically gives people an additional source of vitamins that they may be missing from...
What Is Lipoflavonoid Used For?
Lipoflavonoid is used to treat tinnitus and Meniere's Syndrome. It is a dietary supplement that safely treats inner-ear health and ear circulation...
What Is Lipo-Flavonoid?
Lipoflavonoid is a trademarked blend of bioflavonoids and vitamin compounds, usually used to eliminate tinnitis (ringing in the ears). The natural compounds...
Quercetin Side Effects
Quercetin is a bioflavonoid found primarily in red wine, apples, grapefruit, onions and black tea. The substance is an antioxidant and may...
The Effects of Rutin on Pregnancy
Rutin is a water-soluble vitamin that is found in low doses in food but can also be taken as a vitamin supplement....
Opc Factor Side Effects
OPC, short for oligomeric proanthocyanidins, is a natural food supplement composed of bioflavonoids. Bioflavonoids are organic plant compounds found mainly in fruits...