預防保健防新冠

Quercetine 500mg  + zinc 50mg

Quercetin is a plant pigment (flavonoid). It is found in many plants and foods, such as red wine, onions, green tea, apples, berries, Ginkgo biloba, St. John's wort, American elder, and others. Buckwheat tea has a large amount of quercetin. People use quercetin as a medicine.

Quercetin is most commonly taken by mouthto treat conditions of the heart and bloodvessels and prevent cancer. It is also used for arthritis, bladder infections, and diabetes. But there is limited scientific evidence to support these uses. 
 

How does it work?

Quercetin has antioxidant and anti-inflammatory effects which might help reduce inflammation, kill cancer cells, control blood sugar, and help prevent heart disease.

When taken by mouth: Quercetin is POSSIBLY SAFE for most people when taken by mouth short-term. Quercetin has been safely used in amounts up to 500 mg twice daily for 12 weeks. It is not known if long-term use or higher doses are safe.

When taken by mouth, quercetin can cause headache and tingling of the arms and legs. Very high doses might cause kidney damage.

When given by IV: Quercetin is POSSIBLY SAFE when given intravenously (by IV) in appropriate amounts (less than 722 mg). Side effects may include flushing, sweating, nausea, vomiting, difficulty breathing, or pain at the injection site. But larger amounts given by IV are POSSIBLY UNSAFE. There have been reports of kidney damage at higher doses. 

Special Precautions & Warnings:

Pregnancy and breast-feeding : There isn't enough reliable information to know if quercetin is safe to use when pregnant or breast-feeding. Stay on the safe side and avoid use.

Kidney problems : Quercetin might make kidney problems worse. Don't use quercetin if you have kidney problems.

Zinc is a mineral essential to many aspects of health.

Supplementing with 15–30 mg of elemental zinc daily may improve immunity, blood sugar levels, and eye, heart, and skin health. Be sure not to exceed the upper limit of 40 mg.

Zinc's side effects include digestive issues, flu-like symptoms, and reduced copper absorption and antibiotic effectiveness.