Is Quercetin a Safe and Effective Supplement for Human Body?

Let’s Take a Close Look at Quercetin

Quercetin 98% Extract Powder is a flavonoid compound present in fruits and vegetables with unique biological properties that may promote mental/physical function and reduce the risk of infection. These properties form the foundation of potential benefits for overall health and disease resistance, including anticancer, anti-inflammatory, antiviral, antioxidant, and psychostimulant activities, as well as inhibition of lipid peroxidation, platelet aggregation, and capillary permeability, and the ability to stimulate mitochondrial biogenesis.

Why Choose Quercetin?

★ May reduce inflammation

Research suggests that high levels of free radicals may assist in activating genes that promote inflammation. Therefore, high levels of free radicals may bring about an increased inflammatory response. Persistent inflammation has been linked to health conditions, including some cancers, heart and kidney disease. Research suggests that quercetin flavanoid may help reduce inflammation. In test-tube studies, quercetin reduced inflammatory markers in human cells, including the molecules tumor necrosis factor alpha (TNFα) and interleukin 6 (IL-6). An 8-week study in 50 women with rheumatoid arthritis found that participants who took 500mg of quercetin had substantially lower morning stiffness, morning pain, and post-activity pain.

★ May relieve allergy symptoms

The potential anti-inflammatory properties of quercetin may ease allergy symptoms. Test-tube and animal studies have found that it may block enzymes involved in inflammation and inhibit inflammation-promoting chemicals such as histamine. For instance, one study showed that taking quercetin supplements inhibited peanut-related allergic reactions in mice.

★ May fight cancers

Quercetin has antioxidant properties, it may have anticancer properties. In a review of test-tube and animal studies, quercetin was found to inhibit cell growth and induce cell death in prostate cancer cells. Other test-tube and animal studies observed similar effects of the compound in lung, liver, bladder, breast, ovarian, blood, colon, lymphoid and adrenal cancer cells.

★ May reduce risk of degenerative brain diseases

Research shows that quercetin's antioxidant properties may assist in preventing degenerative brain diseases such as Alzheimer's disease and dementia. In one study, mice with Alzheimer's disease were injected with quercetin every 2 days for 3 months. By the end of the study, the injection had reversed several markers of Alzheimer's, and the mice performed better on learning tests. In another study, a quercetin-rich diet lowered markers of Alzheimer's disease and improved brain function in mice in the early-to-mid stage of the disease.

★ Other potential benefits

Here are some other potential benefits of quercetin:

1. May help fight aging. Test-tube and animal studies suggest that quercetin may help restore or eliminate senescent cells and reduce markers of aging.

2. May aid athletic performance. A review of 11 human studies found that intake of quercetin may slightly improve endurance exercise performance.

3. May help control blood sugar. Human and animal studies have shown that the quercetin compound can reduce fasting blood sugar levels and prevent diabetes complications.

How Much Should I Take?

Adults most commonly use quercetin in dose of 250-1000 mg orally daily for up to 12 weeks. Talk to your healthcare provider to figure out the best dose for your particular situation.

Quercetin has low bioavailability, which means it is hard for your body to absorb it. This is why supplements may contain other compounds, such as vitamin C or digestive enzymes like bromelain, as they may increase absorption. In addition, some studies have shown that quercetin has synergistic effects when combined with other flavonoid supplements such as resveratrol, genistein, and catechin.

Available Dosage Forms

Quercetin supplements are available as capsules or pills. They are often packaged with bromelain, an enzyme found in pineapples, as both are anti-inflammatory. There are also water-soluble forms of quercetin, such as hesperidin-methylchalcone (HMC) or quercetin-chalcone.