The topic of iron levels in children and during pregnancy/lactation comes up pretty frequently, so here is a list of linked discussions that might be helpful to anyone needing information. Please feel free to add other helpful links of your own to this thread, or post if there is something specific that you need help with.
Read this first - most recent about 3.5 yo given ferrous sulfate prescription for "low iron".
Can I give chlorophyll with iron supplements?
Floradix recommended by midwife
Her pediatrician said she should eat meat!
Low iron levels in children/babies
Iron and the Vegetarian Child
Excellent article with dietary suggestions!
-- link not working; will look for another one
Dr. Rydland's Herbal Anemia Formula for children
(Nemo and I saw Dr. Rydland
and used his formula with success!) -- link not working; will look for another one
Normal iron levels chart, dietary sources of iron, etc.
Low iron levels in breastfed babies - a Kellymom.com article