Vitamin B12 is typically well-tolerated, but in very rare cases, there are serious side effects to be aware of. Learn more about them here.

There’s growing awareness of rare, but potentially serious side effects from mega doses of vitamin B6, a nutrient found in supplements and energy drinks.

Medically reviewed by Jamie Johnson, RDN Key Takeaways Too much vitamin D can lead to harmful health effects, including high ...

You can’t absorb all of the vitamin C, but can only urinate it out if you take too much of it, or if it builds up and isn’t being released properly, you can get into serious trouble with your health.

The co-founder of Repose Healthcare noted that symptoms can include 'constant thirst and needing the loo more often, ...

Vitamin D users warned to stop supplements if these symptoms appear - Higher strength supplements can result in a number of ...

Vitamin C is good for protecting cells and keeping them healthy, but you should be aware of some 'overdose' symptoms ...

Common side effects of too much vitamin D include nausea, skin reactions, stomach pain, and headaches, necessitating medical ...

Magnesium is a popular supplement for sleep, but doctors say you should avoid combining it with over-the-counter sleep aids. Taking magnesium and sleep aids together can intensify drowsiness, leaving ...