IG: Potion Stacker Addon
by dasikigaijin
IG: Potion Stacker Addon lets potions of the same type stack in inventory slots, chests, brewing stands and dispensers.
What it does
Drinkable, splash and lingering potions stack up to 16 per slot by default, a limit the server can change in the config. Stacking is unified across potion types, so a batch of identical potions takes one slot instead of many. Dispensers loaded with splash potion stacks fire one potion per redstone pulse, which makes compact, high-capacity defensive traps possible.
The mod is server-side only: players join without installing it, and the server alone runs the stacking. It is built for Fabric and needs Dasik Library, Fabric API and IG: Stack Size Adjuster, which handles the regular stack size of potions. Files are published for Minecraft 26.2 and 26.3, and the code is licensed under the GNU General Public License v3.0 only, so it is open source.
Key features
Unified potion stacking
Identical potions in inventory, chests and brewing stands stack together, which reduces clutter on the hotbar.
Single-dose drinking
Drinking from a stack consumes exactly one potion and applies its full status effects to the player.
Dispenser integration
Dispensers loaded with splash potion stacks fire one splash potion per redstone pulse, and empty glass bottles return to the dispenser.
Brewing batches
A brewing stand can produce a full batch of 16 potions from a single set of ingredients, so one brew fills a stack.
Hotbar placement
A stack can be placed directly into a hotbar slot, so a combat loadout such as Healing II or Swiftness II stays within reach.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Use cases
Who it’s for: Server owners who want potions to take less inventory space, and players who carry long lists of buffs during long expeditions.
How it compares
KH Mob Stacker is server-side only, but it is not open source and is published for 26.1.2 only. Stack Size Modifier runs on both client and server under the MIT License for 1.21.7, while Stack Size Edit is open source under the GNU General Public License v3.0 only and covers 1.20.1 – 1.20.4. Potion Stacker Addon is server-side only and open source, with files for 26.2 – 26.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| IG: Potion Stacker Addon | Fabric | 26.2 – 26.3 | Server-side only | 2026-09-14 |
| KH Mob Stacker | Fabric | 26.1.2 | Server-side only | 2026-06-18 |
| Stack Size Modifier | Fabric | 1.21.7 | Client and server | 2026-02-03 |
| Stack Size Edit | Fabric | 1.20.1 – 1.20.4 | Client and server | 2024-10-14 |
Questions
Does Potion Stacker Addon need Fabric API?
Does the server need the mod, and do players?
Which Minecraft versions are supported?
Can the stack size be changed?
In the catalog
IG: Potion Stacker Addon is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 8,071 mods support Minecraft 26.3.
More from dasikigaijin
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What the author says
Ever since alchemy was introduced to Minecraft, potions have remained stubbornly limited to an unstackable single item per inventory slot. Preparing for an arduous boss battle against the Wither or Ender Dragon, navigating deep Ancient Cities, or exploring Nether Fortresses turns your inventory into a cluttered mess…
Official listing
- Modrinth page
- modrinth.com/mod/ig-potion-stacker-addon
- Owner
- dasikigaijin
- Published
- 2026-07-22
- Updated on Modrinth
- 2026-09-14
- Facts verified
- 2026-10-15