Well this mod allows you to set infinite HP. You can use sethealth comand but only you can 250 hp. With this script you can use !sethp (id) (hp) command to set Extra health. If your extra health is over then you will be hurted. To see your total hp you can type !myhp. On each respawn you will have your total hp.
The script have some other disabled functions like +1hp per kill or admin list.