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Yuck Heart item
Yuck Heart is an unlockable active item in The Binding of Isaac, added in the Repentance DLC.
Description
+1 
Rotten Heart.
Has a 1% chance of being dropped upon defeating Rotgut.
Note
This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.
How to unlock?
Defeat Mother as 
Magdalene.
Item pools
Yuck Heart can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Rotten Beggar |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| nolostbr | Unavailable for  The Lost after obtaining  Birthright. |
Special synergies
The following special synergies and interactions for Yuck Heart have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Book of Virtues | Spawns green-glowing rotten heart wisps in the middle ring that produce a Blue Fly when shooting. Wisps create a small green cloud when destroyed which is purely cosmetic. |
* Note that not all possible synergies and interactions are listed here.
Internal item description
Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.
Yuck Heart
• Grants 1 rotten heart
• Abyss: x1 locust .75x Isaac's damage
• Book of Virtues: x1 middle wisp - 2 hp - 3 damage
• Book of Virtues: Shoots blue flies instead of tears
External links
- Check out the item description on the external Isaac Wiki.
R Key 
Knockout Drops 
Eraser 
Urn of Souls 
Akeldama 
Magic Skin