
When a companion/pet is Recovering, it will take roughly 5 seconds for them to recover and get up (in combat).
When a companion/pet was just revived, it will say "Recovering." and using it will do nothing.
When a companion/pet needs to be revived the activator text will say "Revive". All robot companions and engineering devices require an Engineer Repair Kit to revive them. All humanoid companions and dog/animal pets require an Adrenaline Injector to revive them.
The vanilla "use stimpak" revive option is overridden by the new activator option. All companions and pets now use a new customized version of reviving them when they fall in combat