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Acid Baby item
Acid Baby is a familiar in The Binding of Isaac, added in the Afterbirth+ DLC.
Description
Spawns a familiar that follows Isaac and drops a random pill after every 7 cleared rooms. The first pill is dropped after 6 rooms.
Upon using a pill, the familiar poisons all enemies in the room for 6 ticks. Each tick deals damage equal to Isaac's. Enemies also take 10 additional damage.
Note
This page shows information as of the latest Repentance release.
To see latest up-to date information about this item for the new Repentance+ (Online Co-op) DLC, check this page instead.
Transformations
Conjoined transformation. Collecting 3 items from this set will make Isaac shoot in 3 directions at the cost of -0.3 damage and -0.3 tears.
Item pools
Acid Baby can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Baby Shop |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| summonable | Can be summoned via  Lemegeton. |
| baby | Contributes towards the Conjoined transformation. |
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Acid Baby have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | BFFS! | The familiar drops a pill after every 6 cleared room. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the external Isaac Wiki.
Metronome 
D infinity 
Eden's Soul 
YO LISTEN! 
Adrenaline 
Jacob's Ladder