If only there was a way to do that. When the kidneys get damaged, it's permanent. They don't heal or recover, ever.
The only hope is to delay a transplant by stopping whatever was destroying them. Most often, that's diabetes and high blood pressure, both of which can be controlled. The kidneys can then limp along for quite awhile.
On the contrary, here’s a couple of links...
“...high-dose thiamin (vitamin B1) may be a valuable therapeutic agent in the treatment of diabetic nephropathy”
http://www.proteinpower.com/drmike/supplements/thiamin-and-diabetic-nephropathy/
http://www.springerlink.com/content/51l034044218455j/?p=c5bea8fb1ebd4a62bedc8ac4726e797f&pi=3