Pretty much all healing items are next to useless unless you need an OHSHI button on a non-healing character, even then the healing potency of the items is a joke. They are only decent before you get your job class, so after you hit 30, they are all pretty much garbage. The current cool down makes them horrible to use while a low level unless you use them while partied up and only in between spurts of not being healed.

My Rank 3 Chocobo does better healing than the healing items.