Excess Vitamin A in the body may make you lose appetite.

Robert F. Kennedy Jr. talked about vitamin A in a Fox News column about Texas' measles outbreak. While the supplement can be ...

Too much vitamin A, particularly from supplements or animal sources (retinol), can lead to toxicity known as hypervitaminosis A. Symptoms: Dizziness, nausea, headaches, dry skin, joint pain, and in ...

We describe the metabolism of vitamin B12 in the context of hypervitaminosis B12 as a reflection of elevated transcobalamin consequent to underlying disease and the need to identify promptly the ...

For instance, hypervitaminosis A, caused by excessive vitamin A intake, can result in elevated spinal fluid pressure, coma, and organ damage, with doses exceeding 200 mg being particularly ...