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.

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.

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.

Vitamin D supplements are widely used for bone health and immunity, but excessive intake can lead to silent side effects.

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

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 ...

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

“Taking more than the recommended amount of fat-soluble vitamins like vitamins A, D, E, and K can cause them to build up in ...