ingredient information
Quercetin is a non-citrus bioflavonoid derived from blue-green algae. A natural antioxidant found in red wine, quercetin protects cells in the body from damage by free radicals (naturally occurring but harmful substances). Heart disease and high cholesterol are thought to be at least partly caused by free radical damage to blood vessels, so it makes sense that quercetin might help protect against heart attacks and strokes. Quercetin belongs to a class of water-soluble plant coloring agents called bioflavonoids, a type of nutrient that we're learning more about all the time. Although they don't seem to be essential to life, it's likely that we need them for optimal health. Another intriguing finding is that quercetin may help prevent immune cells from releasing histamine, the chemical that initiates the itching, sneezing, and swelling of an allergic reaction. Based on this very preliminary research, quercetin is often recommended as a treatment for allergies and asthma. Quercetin is not an essential nutrient. It is found in red wine, grapefruit, onions, apples, black tea, and, in lesser amounts, in leafy green vegetables and beans. However, to get a therapeutic dosage, you'll have to take a supplement. Quercetin supplements are available in pill and tablet form. Source: A natural bioflavonoid called quercetin has proven in laboratory studies to have remarkable protective effects against the mechanisms involved in the development of degenerative disease. The problem has been that the oral bioavailability of quercetin supplements (quercetin dihydrate) is poor. According to the Merck Index, "quercetin dihydrate is practically insoluble in water." This means that ingesting most quercetin supplements does not provide a meaningful quantity to the cells where it exerts its multiple beneficial effects. Quercetin is soluble in alcohol, which helps explain the health-promoting effects of red wine. Red wine contains quercetin and other flavonoids that are made bioavailable to the body by the alcohol in the wine. Quercetin became a popular dietary supplement based on evidence indicating it guards against a wide range of common disorders. Regrettably, the poor absorption rate means that people taking conventional quercetin supplements can't translate the impressive roster of research findings into reality. However, when quercetin is transformed into a water-soluble form, its absorption in the gastrointestinal tract and bioavailability are dramatically improved. Water-soluble quercetin delivers the benefits of quercetin-the predominant flavonoid in the human diet-at a lower dosage through improved absorption. Water-soluble quercetin is safe and non-mutagenic according to the standard Ames test for mutagenicity. The good news is that water-soluble quercetin has been added to two popular supplements already used by Life Extension members. This article reveals quercetin's distinct mechanisms of action that make it a critical component of a disease prevention program. The American Thrombosis Association estimates that five million to 20 million cases of blood clot related diseases occur in the United States each year. An abnormal blood clot, or thrombus, can form in arteries, veins or the heart. Not only can a thrombus prevent blood and oxygen from reaching tissues and vital organs, but it can also break off and travel through the blood stream to the heart, brain, lung or a distant blood vessel. A traveling clot, called an embolism, can cause ischemia, heart attack, stroke or pulmonary embolism. For example, a thrombus in the large blood vessels of the leg, called deep venous thrombosis, will often break off to form an embolus that drifts through the bloodstream and cuts off circulation downstream from the spot where it eventually lodges. Source: