I've drunk fruit flavoured teabags in the past but find a slice or lemon, or orange (or both) with boiling water poured over it produces a very similar effect.
I`ve drank every make of fruit tea availabele at out Tesco`s. Apart from being nice & caffine free, I don`t think there`s any benefit from drinking them. I normally use sugar in tea & coffee, but I can drink them without it, so maybe that`s a benefit.