The Binding of Isaac: Antibirth Wiki
Sulfur Icon.png
Character Appearance
Sulfur App.png
Item Type
Activated Collectible
Item ID
Pickup Quote
Temporary demon form
Recharge Time
Item Pool
Devil Room

Sulfur is an active item.


  • Grants Brimstone for the current room.
  • If used twice in the same room (i.e. through the use of batteries), grants Brimstone permanently.

In-game Footage[]


  • This item originated from the Binding of Isaac: Community Remix mod.
  • Brimstone is an archaic name for Sulfur.
  • When this item was ported into Repentance, the effect to gain permanent Brimstone was fixed. However, as a possible nod to it, using it twice or gaining two Brimstones in any other way will grant a larger laser with higher damage and a unique costume.


Bug Bug! If Sulfur is used while Isaac is shooting with Technology 2, the laser shot by Technology 2 will be locked in the current direction regardless of what buttons are pressed. Leaving the current room can fix this problem.
Bug Bug! Using Sulfur twice in a room grants its effects permanently. The effects remain even after Isaac gets rid of Sulfur.