One test of kidney function is creainine whose normal level is 1 while the other test of kidney function test is urea creatinine level whose normal value is 20. What medicine should be used to reduce the urea creatinine level if its level in blood is increased up to 107.

First I would suggest a low potassium diet. And start taking a multivitamin. Also control and lower bloodpresure, diabetes, and cholestrol (as those apply to you)

Beyond that, please wait for the more experienced health professionals here.
And I'm sure they would like more info if you can give it. :)