Minecraft wiki entry for Defeating_a_village_raid, associated text: In the meantime, you can also brew positive potions to heal yourself (either a regeneration potion, a healing potion, a strength potion, a invisibility potion, a slow falling potion, a swiftness potion, or a fire resistance potion if you're fighting a raid in the nether) or give yourself some beneficial effects and if you have enough gunpowder you can use splash potions to heal yourself quicker. You can also heal any villagers or iron golems that are damaged using the positive splash potions or you can also give them positive effects (swiftness works for them as they can get to their enemies quicker and escape quicker and invisibility works for them as well because they can be undetected). Be sure not to heal any enemies when throwing the potion, since they are supposed to be killed.