I really would not recommend mothers take antidepressants for postpartum depression. If there are specific causes such as circumstances for the depression, it is best to deal with those. Postpartum depression can also be prevented by eating the placenta.
There are resources online as well as dvds that teach what a baby's specific cries mean. There is also a dvd that teaches how to tell what a baby needs before she cries by listening to the sounds she makes.
Colic can be cured or at least eased with massage.
Fluoride is a really terrible substance that can cause all kinds of harm to people, especially of course babies. There are studies showing that, contrary to strengthening teeth, fluoride actually breaks down teeth.