Mild overdose symptoms include headaches ... rendering them ineffective. Vitamin B12 \- cyanocobalamin. Overdosing on vitamin ...

Vitamin B12 has not been shown to be toxic in high doses. Not all B vitamins will lead to symptoms of toxicity at higher ...

Surrey's coroner is calling for change to supplement packaging rules after an 89-year-old's fatal vitamin D overdose. Following the death of David Mitchener, the coroner has written to the ...

Vitamin D regulates the amount of calcium in the body, so an overdose can cause high calcium levels, which can result in neurological symptoms including drowsiness, psychosis, and coma.