Little kids and chai tea?

"Chai" is even more generic than "tea". Both terms refer to a very wide variety of beverages brewed from a very wide variety of plant species. You can't make any claim about the safety of chai or tea without knowing what is in them. For all you know, they might be brewed from coca, marijuana, opium and nightshade with anise and ginger to disguise any other flavors. Your best bets are trust the name brand or brew your own from spices of known origin.