The Splash Potion of Weakness (4:00/3:00) is a throwable variant of potions that, upon impact, reduces the melee damage of affected entities. It has a duration of four minutes, or three if created without using Redstone to extend its effects. When used against mobs or other players, it significantly decreases their attack power, making them less dangerous in combat. This potion is particularly useful for weakening and then curing zombie villagers.
The numerical item ID for Splash Potion of Weakness (4:00/3:00) is 438
Numerical item IDs will only work in Minecraft versions below 1.13.
The item ID for Splash Potion of Weakness (4:00/3:00) is minecraft:splash_potion
This is the spawn command to give yourself Splash Potion of Weakness (4:00/3:00) in Minecraft which includes the Minecraft /give command. If you are using the Essentials plugin you will need to use /minecraft:give instead of /give