Taken OTC meds like tylenol, (acetaminophen) aspirin often, 4 yrs, which cud have caused high bun and creatinine #s, I eat a lot of protein. Can these #s b lowered if I cut back on protein and OTC meds? Is it late?

Meds and kidney. You have no proof that those medications caused your elevated BUN and creatinine levels. You need to see a nephrologist to have an examination, blood work, urine tests and an ultrasound of your kidneys done. Once the results are back, you can have a good idea of what your problem is and what caused it. Good luck.