a) Carotenoids are only converted to vitamin A as needed, so this level is safe even though it is at
the Tolerable Upper Limit
b) Some children and adults may benefit from much higher dosages, see section on High Dose
Vitamin B6.
c) Some children with autism have slightly elevated copper, so either low or no supplementation is
sufficient for most children with autism.

d) Iron should be added on an individual basis only if serum ferritin tests reveal a need for iron, or
for girls/women who are of menstruation age. Suggest 5-10 mg of iron chelate for 4 weeks,
followed by half that dosage afterwards

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