"Prozac is a member of the SSRI drug class (Selective Serotonin Reuptake Inhibitor family), which increases serotonin levels in the synapse by BLOCKING serotonin reuptake into brain cells.........It seemed to me that statement that bananas contained serotonin was wrong so I looked it up. It appears the correct statement is: Bananas contain tryptophan, a type of protein that the body converts into serotonin." This is very interesting. For the average person, it would seem that one banana would have minimal impact on serotonin. However, autistic kids ARE very sensitive. Worth investigating in more detail!