Not to be confused with the active item, IV Bag.
A big bag full of blood.
Isaac gets blood all over his mouth, with his teeth becoming crooked.
- The Blood Bag and A Dollar rewards can be re-rolled with The Dice.
- Can be won and picked up multiple times during one playthrough.
- Does not restore any hearts for ???, only adds a Soul Heart.
- Isaac's mouth bears resemblance to Larry Jr.'s after picking up this item.