Diabetic Nephropathy. High-dose b vitamin therapy is not helpful in diabetic nephropathy. An article was published in the jama in 2010. High doses of b vitamins were associated with a greater chance of kidney dysfunction.
Yes. Avoid excesses of any of the vitamins. Some side effects and the waste!
Is it safe to take a vitamin b supplement, a vitamin d supplement and a multivitamin all at the same time?
Yes. Yes, under your doctor's supervision.
Is it safe to take a vitamin b supplement, a vitamin d supplement, and a multivitamin all at the same time?
Do not over do it. Most what you take if above normal use goes in the urine and if it is too much could have some side effects.