Anyone suffering from low blood sugar episodes should avoid large amounts of Vitamin B6, which can cause blood sugar to drop even more, but they are generally helped with extra niacinamide and or biotin. There are claims that diabetics may benefit from larger amounts of biotin, but patient feedback and blood sugar measurements have been to the contrary... 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...