How do soaked arrows work in Minecraft?

When I make soaked arrows e.g. Arrow of Healing: Do I have the effect or the one that is hit by the arrow? I would like to use stronger arrows in the PVM. But if this heals the monster, it doesn't do anything. Can someone explain the function to me?

Who is hit by it

So better take immediate damage or something

Not against zombies… Against zombies healing

The arrows have effects, if you meet someone, they get the effects,
Healing is used to heal the teammate and damage is done to mobs.