Too much vitamin D causes high calcium levels ... higher dose prescribed by a healthcare provider, you should report side effects and get your blood work tested regularly.

Too much Vitamin D can lead to toxicity with symptoms like low appetite, irregular bowel movements, lethargy, and a higher cancer risk. Experts advise against taking 60,000 IU daily for months.

Still, “Having 400mg or less a day of magnesium from supplements is unlikely to cause any harm,” the NHS states. “You should ...

But it’s difficult for people aged over 75 to get enough vitamin D from a few minutes of sunshine, so the Endocrine Society ...

And that's where getting too much vitamin B6 can become ... the age of 50 That said, you'd have to consume a significantly greater amount to experience any side effects from excess vitamin B6.

It is possible to take too much vitamin D, which can have adverse effects, so do speak with your healthcare provider to find out which dose is right for you before beginning any new supplement ...

Humans were basically built to produce and carry higher levels of vitamin D when exposed to the sun. Previous research suggests that the first sign of real side effects or toxicity of vitamin D ...

Very serious risks' Jonathan Stevens, assistant coroner in Surrey, raised concerns that vitamin supplements can have "potentially very serious risks and side effects ... too many vitamin D ...

Here's what you need to know about the side effects of taking vitamin B12 supplements and whether it is possible to take too much. It is highly unlikely that someone could take too much B12 ...