If a tea is not decaffeinated, it has caffeine in it. Lipton tea does have caffeine in it. They do make a decaffeinated product as well, which does taste the same. Removing caffeine does not affect the flavor of the tea at all.
Lipton tea does contain caffeine. If you want decaffeinated then Lipton also sells decaffeinated tea bags. The Lipton drinks you see in the stores also contain caffeine unless you purchase the ones that are decaffeinated.