Each item in Minecraft has a unique ID assigned to it, known as an item ID, this can be used in commands to spawn the item into the game. The item ID for slowness potion (4:00) in Minecraft is shown below:
When Minecraft updated to version 1.13, a changed dubbed "The Flattening" was introduced. In "The Flattening", numerical IDs and item data was removed, and some item IDs were changed to make them more logical - Slowness Potion (4:00) was one of the many items that had their IDs changed.
For this reason, if you're playing on a Minecraft version below 1.13 (1.12, 1.8, 1.7), you should use what we've named a legacy ID for this item. The legacy ID for slowness potion (4:00) is:
Slowness Potion (4:00) has a data value of 8266. You will need to add this to commands, along with its legacy item ID (below), to spawn it.
Items from earlier versions of Minecraft were assigned a numerical ID - a unique number to represent it.
This item also has a data value assigned to it. The data value is 8266 - you need to add this to the item ID (with a colon before) in order to spawn slowness potion (4:00).
The numerical ID for Slowness Potion (4:00) is:
The Slowness Potion (4:00) item can be spawned in Minecraft with the below command. Cheats must be enabled before this will work.
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When this potion is consumed (via holding right click), the slowness will be applied for 4 minutes. The slowness potion effect is the exact opposite of the swiftness potion effect, and reduces the speed at which you can walk and run.
|Legacy Item ID (1.12.2 and Below)||minecraft:potion|