Questions on what daily intake of ascorbic acid is considered to be an overdose come up on a regular basis. While less informed sources dismiss the possibility of a Vitamin C overdose or toxicity based on ascorbic acid being water-soluble, they seem to forget that even water-soluble nutrients interact with other nutritional elements as synergists or antagonists, and as such are capable of enhancing or inhibiting their benefits and functions... Full Text

Manganese may help with some symptoms of Parkinson's disease such as muscle rigidity and twitching...
Research shows that phytosterols such as beta-sitosterol may help normalize the function of natural killer cells and T-helper lymphocytes...
Iron deficiency may be suspect with some forms of ADHD. 84% of children with ADHD were found to have abnormally low levels of ferritin...
A high intake of B Vitamins can trigger heart palpitations, HBP, major complications in patients with congestive heart disease...