Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

Soy Milk is a passive item.



  • At base tear rate, Soy Milk sets the player's tear delay to the game's minimum value of 1, for 15 tears per second. This is much lower than the normal minimum tear delay; see the tear delay explanation page.
  • Removed in Repentance At base damage, Soy Milk is a very small DPS up. With a tear delay of 8 or lower, Soy Milk becomes a DPS down. The more tears per second before obtaining Soy Milk, the greater the decrease in DPS.
  • Soy Milk's damage down stat also significantly decreases tear size.
  • The endless stream of tears effectively increases directional knockback.
  • Due to the high fire rate, items that cause tears to inflict status effects activate more frequently.
  • Removed in Afterbirth Soy Milk is a special item.
  • Charged items which do not affect tears such as Added in Repentance Added in Afterbirth15►Maw of the Void Maw of the Void, Added in Repentance15►Sumptorium Sumptorium, and Added in Repentance15►Revelation Revelation are not affected.


  • 15►20/20 20/20: The shot pattern may help in controlling enemy knockback, in addition to dealing up to double damage.
  • 15►Blood Clot Blood Clot: +1 damage bonus on Blood Clot tears is unaffected by the damage penalty.
  • Added in Repentance 15►Brimstone Brimstone/Azazel Azazel: Beam can be fired continuously without the need to charge.
  • 15►Chemical Peel Chemical Peel: +2 damage bonus on Chemical Peel tears is unaffected by the damage penalty.
  • The Mulligan: Will generate an enormous wave of blue flies given that each tear has a 1/6 chance of spawning one.
  • Removed in Repentance15►Chocolate Milk Chocolate Milk: Shots cannot be charged, but Isaac gains a flat +1 damage up after the Soy Milk penalty.
    • Added in Repentance Shoots moderately charged shots at a quick pace. No longer gives +1 damage.
  • Added in Repentance 15►Cursed Eye Cursed Eye: Fires automatically upon reaching full charge. This may be riskier than Cursed Eye alone because Soy Milk prevents you from holding a fully charged shot.
  • Added in Afterbirth15►Explosivo Explosivo: Despite the tiny appearance of the bomb tears, the explosions will do normal explosion damage. Due to the massive fire rate, many bombs can be applied in extremely quick succession, decimating anything after a short delay.
  • Removed in Repentance 15►Dr. Fetus Dr. Fetus: Allows for incredibly fast firing medium damage bombs.
    • Added in Repentance Fires tiny bombs, like the kinds created by Scatter Bombs. Damage downgrade applies as normal.
  • 15►Ipecac Ipecac: The very fast rate of fire fills the screen with low damage explosions.
  • Removed in Repentance 15►Libra Libra: Decreases fire rate slightly, but massively increases damage, range, and speed. Tear height is also massively increased, meaning tears can hit enemies through obstacles without spectral effect.
    • Added in Repentance Resets stats to slightly higher than base level.
    • Added in Repentance Libra + 15►Brimstone Brimstone: Constant Brimstone beam at with normal/higher damage.
  • 15►Lost Contact Lost Contact: Extremely effective at blocking shots.
  • 15►A Lump of Coal A Lump of Coal: Significantly increases tear damage as they get further away. Even with only this synergy, individual tear damage appears to approach starting tear damage when firing over longer distances.
  • Added in Repentance 15►Monstro's Lung Monstro's Lung: No longer requires charging, creating rapid-fire tear barrages.
  • 15►Mysterious Liquid Mysterious Liquid: Each shot creates creep that deals reasonable damage but stacks with every shot, causing hefty damage.
  • Piercing tears: Causes tears to affect enemy movement less for better accuracy, though also removes the advantage of rapidly knocking back enemies.
  • 15►Pisces Pisces: Greatly increases knockback, allowing tears to pin enemies against walls.
  • Added in Repentance15►Rock Bottom Rock Bottom: If Soy Milk is picked up at an opportune time (after Rock Bottom and preferably near the end of the run), it will result in a huge gain in fire rate without the damage penalty.
  • Added in Afterbirth †15►Technology Zero Technology Zero: The near-constant stream of tears will have electricity chained between them, providing an electrical net of damage making it almost impossible to not hit an enemy. This can greatly help offset the lowered damage by increasing the number of hits.
  • Added in Repentance 15►Tech X Tech X: Tech X no longer requires charging and will rapidly fire full-sized laser rings.


  • Added in Repentance15►Almond Milk Almond Milk: Overrides Soy Milk (no additional effect on tears or damage).
  • 15►Epic Fetus Epic Fetus: Damage of missiles will be decreased accordingly, but unlike normal tears, there is still a fixed timed delay between firing missiles.
  • Added in Afterbirth15►Kidney Stone Kidney Stone's charge time is not affected.
  • Added in Repentance 15►Mom's Knife Mom's Knife No special synergy. Charge bar still disappears, but knife will not be automatically released upon full charge.
  • 15►Proptosis Proptosis: The low-damage, lowered size tears disappear extremely quickly, greatly reducing range.
  • Removed in Repentance 15►Technology 2 Technology 2: Half of the Soy Milk tears are replaced by a constant laser, but damage down compounds.
    • Added in Repentance Half of the Soy Milk tears are replaced by a constant laser and there is no further damage down on it.

In-game Footage[]



PC CLAT SEVR (Locked Chest room to the left of spawn)

PC J3CA JLHW (Treasure Room adjacent to spawn)

PC Hard mode only 39EQ E7Q2 (First floor Treasure Room to the right of spawn; Treasure Room to the left of spawn contains Libra; the pot above the spawn room contains The Quarter)

PC Added in Afterbirth FD36 40EN (Treasure room adjacent to spawn)

PC Added in Afterbirth † 1879 JBHN (First floor Treasure Room to the right of spawn; Treasure Room above spawn contains Libra)

PS4 J6QS WYV7 (First floor Treasure Room)

Switch Greedier mode only HNMH 3ZKA (First Golden Treasure Room)

External Links[]

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