Improving renal function with quercetin-containing compositions

1. A method for increasing glomerular filtration rate, the method comprising identifying a subject in need of increased glomerular filtration rate and administering to the subject in need thereof an effective amount of a composition containing quercetin, vitamin C, vitamin B3, and folic acid.

2. The method of claim 1 , wherein the composition has a weight ratio of 1:0.2-2.5:0.02-1:0.2-2 (mg/mg/mg/mcg) between quercetin, vitamin C, vitamin B3, and folic acid.

3. The method of claim 2 , wherein the weight ratio is 1:0.5-1:0.02-0.2:0.5-1 (mg/mg/mg/mcg) between quercetin, vitamin C, vitamin B3, and folic acid.

4. The method of claim 3 , wherein the weight ratio is 1:1:0.04:0.8 (mg/mg/mg/mcg).

5. The method of claim 1 , wherein the effective amount of the composition is an amount that provides 500-2000 mg quercetin, 500-2000 mg vitamin C, 20-60 mg vitamin B3, and 400-800 mcg folic acid per day.

6. The method of claim 5 , wherein the effective amount of the composition is an amount that provides 500 mg quercetin, 500 mg vitamin C, 20 mg vitamin B3, and 400 mcg folic acid per day.

7. The method of claim 5 , wherein the effective amount of the composition is an amount that provides 1000 mg quercetin, 1000 mg vitamin C, 40 mg vitamin B3, and 800 mcg folic acid.

8. The method of claim 1 , wherein the composition is in dry form.

9. The method of claim 1 , wherein the composition is in liquid form.

10. The method of claim 1 , wherein the composition is a food product.

11. The method of claim 10 , wherein the food product is tea, juice, milk, coffee, a soft drink, jelly, ice cream, yogurt, cereal, chocolate, a cookie, or a snack bar.

12. The method of claim 1 , wherein the composition is a dietary supplement or a pharmaceutical formulation.

13. The method of claim 12 , wherein the composition is in the form of a tablet, a capsule, a soft chew, or a gel.