Maya bounced off the walls all the way from Sydney to Bangkok en route to London - Phenargan wasn't such a great idea
Lil miss had it at Starship when she had chicken pox to help with the itching and help her settle as she got really, really sick with the pox.
It's always been used cautiously in infants due to a minimal risk of respiratory failure, the Medsafe guidelines recommend it not be given to children under two either.
This from the Medsafe info sheet:
"Children may experience paradoxical excitation with promethazine.
This product should not be used in children under 2 years of age, due to the potential for fatal respiratory depression.
Caution should be exercised when administering promethazine to children as there is potential for central and obstructive apnoea and reduced arousal. Excessive dosages of antihistamines in children may cause hallucinations, convulsions and sudden death."