Well, maybe it needed some fixing to be more close to the original pen & paper skill but I wouldn't exactly call an ability that wastes an action and bring a companion back on his feet with 1 HP "broken", nor I would even dream to BRAG about spending half of a fight spamming it on a constantly-downed ally.
I mean, I already consider a fight where I need to use it once a half failure...
First of all I was not in any way bragging, I said I cheesed the fight. And in fights where there's only one opponent they'll keep downing the same character again and again, while I'll keep picking them up again and again, and my other two will keep stabbing the critter. That's just plainly busted.
The suggestion to be able to use healing potions on an ally is good though. Could replace it with the ability to spend a potion on ally, and grey it out if you don't have any potions to spare.