Vitamin C toxicity is rare, but daily doses over 2,000 milligrams may cause unpleasant side effects like digestive issues, headache, and skin flushing.

You may take lithium as a treatment for bipolar disorder. It’s the most common form of treatment for this condition. Lithium toxicity can be caused by underlying health issues, changes to medication, ...

Vitamin E is a critical nutrient for the body that can be found in foods like sunflower seeds, nuts, and vegetable oils. It plays an important role in expanding blood vessels to prevent dangerous ...

Vitamin D toxicity can happen if you take too many vitamin D supplements. Even high levels that do not cause toxicity can be harmful. Share on Pinterest Sophia Hsin/Stocksy United Vitamin D toxicity ...

Lidocaine is a common local anesthetic, but absorbing too much or prolonging exposure increases the chances of a lidocaine overdose. Lidocaine is a local anesthetic and generally safe. However, it is ...

Long-term use of high dose vitamin D supplements may cause adverse side effects, such as dehydration, nausea, vomiting, cardiovascular problems, and confusion. The Office of Dietary Supplements notes ...

A committee of the National Research Council (NRC) will conduct a two-part study to assess and advance current approaches to toxicity testing and assessment to meet regulatory data needs. In the first ...