Natural Quercetin: Powerful Antioxidant, Cardiovascular Health, Immunity and Respiratory Support - Premium Supplement for Inflammation and Cellular Protection

Natural Quercetin 500 mg, Osavi is a high-quality dietary supplement containing Quercetin (FlaviPure®), a natural flavonoid extracted from Japanese pagoda tree flowers (Sophora japonica), with a 12:1 DER extraction ratio. This concentrated extract provides a standardized dose of quercetin, recognized for its antioxidant, anti-inflammatory and immunomodulatory effects. Quercetin is a polyphenolic compound from the bioflavonoid category, with an essential role in combating oxidative stress, protecting cells against free radicals, supporting the cardiovascular system and maintaining respiratory system health.

Due to its natural formula and increased bioavailability, Natural Quercetin from Osavi is an effective ally in supporting a healthy lifestyle, especially during periods of increased oxidative stress, inflammation or immune vulnerability. It is considered an essential supplement for maintaining biological balance and protecting the body against aggressive environmental factors.

Detailed Benefits of Natural Quercetin 500 mg, Osavi (FlaviPure®)

• Antioxidant protection and free radical neutralization

Oxidative stress is one of the main causes of cellular deterioration and accelerated aging. It is generated by an imbalance between free radical production and the body's ability to neutralize them. Free radicals can attack cellular structure, DNA, lipids and essential proteins, favoring the development of chronic and inflammatory diseases.

Quercetin acts as a powerful antioxidant by:
✓ Neutralizing free radicals and preventing oxidative stress
✓ Protecting cells and mitochondria against oxidative deterioration
✓ Inhibiting lipid peroxidation and DNA fragmentation

This protection is essential for maintaining cellular integrity, preventing degenerative diseases and supporting optimal organ function. Quercetin helps preserve the biological youth of the body and prevent premature aging.

• Support for cardiovascular health

The cardiovascular system is profoundly affected by chronic inflammation, oxidative stress and accumulation of pro-atherogenic compounds in blood vessels. Quercetin has a protective effect on the circulatory system through multiple physiological mechanisms.

The beneficial actions of quercetin on the cardiovascular system include:
✓ Improving endothelial function - by increasing nitric oxide (NO) production, which contributes to blood vessel dilation
✓ Lowering blood pressure - by reducing inflammation and relaxing vascular smooth muscle
✓ Reducing oxidized LDL cholesterol levels - major factor in atheroma plaque formation
✓ Inhibiting platelet aggregation - preventing blood clot formation

Through these effects, quercetin contributes to reducing the risk of cardiovascular diseases, such as hypertension, atherosclerosis and ischemic events.

• Systemic anti-inflammatory effects

Chronic inflammation is a key factor in triggering and maintaining many modern conditions, from autoimmune and metabolic diseases to neuronal degeneration. Quercetin is recognized for its ability to regulate inflammatory processes at cellular and molecular levels.

Quercetin reduces inflammation by:
✓ Inhibiting proinflammatory enzymes (COX-2, LOX)
✓ Blocking the release of inflammatory cytokines (IL-6, TNF-α)
✓ Stabilizing mast cells and reducing histamine release
✓ Modulating immune response to prevent autoimmune inflammation

These properties make quercetin an ideal supplement for managing inflammation in joints, gastrointestinal tract, cardiovascular system and peripheral tissues.

• Immune system support and antiviral protection

Quercetin has been shown to have a positive impact on immunity by modulating the activity of immune cells, especially macrophages, T cells and NK (natural killer) cells. It helps the body respond efficiently to viral and bacterial infections, without exaggerating inflammatory reactions.

The immunological benefits of quercetin include:
✓ Activating defense cells and increasing phagocytosis capacity
✓ Reducing excessive inflammation in immune response - balancing immunity and inflammation
✓ Inhibiting virus entry into cells - including some coronavirus and flu virus strains
✓ Supporting mucosal barriers (nose, throat, lungs) - the first line of defense against pathogens

This effect is essential especially during cold periods, during seasonal respiratory infections or for people with vulnerable immune systems.

• Beneficial effects on respiratory health

Quercetin has increased affinity for respiratory tissues, where it acts both as an anti-inflammatory and as a natural antihistamine agent. It can help alleviate respiratory symptoms associated with allergies, asthma or pulmonary inflammation.

Among its benefits for the respiratory system are:
✓ Reducing nasal congestion and sinus inflammation
✓ Decreasing bronchial hyperreactivity - important in asthma and chronic bronchitis
✓ Inhibiting histamine release - calming allergic symptoms
✓ Improving oxygenation by supporting alveolar function

This action makes Natural Quercetin an effective support for people exposed to allergens, pollution or respiratory pathogens.

• Neuroprotection and cognitive support

The brain is an extremely sensitive organ to oxidative stress and chronic inflammation, factors that contribute to neuronal degeneration and the appearance of cognitive disorders. Quercetin crosses the blood-brain barrier and acts directly on brain tissue.

The neuroprotective effects of quercetin include:
✓ Reducing inflammation at neuronal level - decreasing activated microglia
✓ Protecting neurons against oxidative stress - reducing the risk of neurodegeneration
✓ Improving cerebral circulation - by supporting vasodilation and neuronal perfusion
✓ Stimulating synaptic plasticity - important for learning and memory

This makes it a valuable adjuvant in maintaining cognitive function and preventing mental deterioration related to age or chronic stress.

• Support for metabolic balance and blood sugar control

Quercetin has beneficial effects on glucose metabolism and insulin sensitivity, being a valuable supplement for people who want to regulate their metabolism or who are at risk of type 2 diabetes.

It acts by:
✓ Improving cellular response to insulin - reducing insulin resistance
✓ Decreasing glucose absorption at intestinal level - reducing glycemic peaks
✓ Protecting pancreas and β cells - maintaining insulin secretion

This metabolic effect supports maintaining healthy body weight, reducing the risk of metabolic syndrome and preventing energy fluctuations associated with glycemic imbalances.

• Synergistic effects and superior bioavailability due to FlaviPure®

FlaviPure® is a standardized quercetin extract with superior purity and concentration, obtained through a careful extraction process from Japanese pagoda tree flowers. The 12:1 DER ratio ensures increased potency, which means that a small amount of extract provides a powerful physiological effect. This makes the Osavi product a safe and effective choice for those who want a natural supplement with proven efficiency.