Can taking more vitamin b-complex still help heal nerve damage even if you're not low on b vitamins?

See below: It can't hurt to try as it is water soluble and what your body doesn't need will pass out in your urine.

Possibly: Here is some scientific data that might help. A prescription medical food metanx (containing biologically active folate, (folic acid) b-12, and b-6) has been studied with small fibre diabetic neuropathy, and over a period of several months did demonstrate improved nerve fibre density and less painful and numb symptoms.