Most of the people think Supplements like vitamin B, Vitamin B12 are not harmful. Like Vitamin C, Vitamin B supplements also is water soluble that lead to failure to accumulate in body.
But this concept has changed lately as a whole. Intaking of too much amount of vitamin B and vitamin B 12 suppliments can cause issues like lung cancer. Then there is vitamin B6 that is deeply related to nerve toxicity. However, as per the experts, lower doses like 200-300 mg per day of vitamin B supplements doesn’t cause any problem.