Binding of Isaac: Rebirth Wiki

PHD is a passive item.

Effects[ | ]

Pill Changes Into
Stat down pill Stat up pill
Amnesia I can see forever!
(in Afterbirth † and Repentance) ??? Telepills
(in Afterbirth † and Repentance) Addicted Percs!
(in Afterbirth † and Repentance) I'm Excited!!! I'm Drowsy...
(in Afterbirth † and Repentance) Paralysis Pheromones
(in Afterbirth † and Repentance) Retro Vision I can see forever!
(in Afterbirth † and Repentance) R U A Wizard? Power Pill!
(in Afterbirth † and Repentance) X-Lax Something's wrong...
(except in Repentance) Bad Trip Full Health
(in Repentance) Bad Trip Balls of Steel
(in Repentance) Experimental Pill Only grants a stat up
(in Repentance) Gold Pill Only has positive effects
48 Hour Energy
Bad Gas
Bombs are Key
Explosive Diarrhea
I can see forever!
I Found Pills
Lemon Party
Pretty Fly
(except in Rebirth) Friends Till the End!
(except in Rebirth) Infested!
(except in Rebirth) Infested?
(except in Rebirth) One makes you larger
(except in Rebirth) One makes you small
(except in Rebirth) Percs!
(except in Rebirth) Power Pill!
(except in Rebirth) Re-Lax
(in Afterbirth) ???
(in Afterbirth) Addicted!
(in Afterbirth) Retro Vision
(in Afterbirth † and Repentance) Feels Like I'm Walking on Sunshine!
(in Afterbirth † and Repentance) Gulp!
(in Afterbirth † and Repentance) Horf!
(in Afterbirth † and Repentance) Something's Wrong...
(in Afterbirth † and Repentance) Vurp!
(in Rebirth and Afterbirth) Paralysis
(in Rebirth and Afterbirth) R U A Wizard?

Notes[ | ]

  • Bad pills already obtained/dropped will be converted to their "good" counterparts.
  • If PHD is lost in any way, such as rerolling by the Collectible D4 iconD4 or a Dice RoomDice Room, or dropping it as (in Repentance) Character Tainted Isaac iconTainted Isaac, pills will remain fully identified, but negative pills will not be converted.
  • (in Afterbirth † and Repentance) Performing a RERUN with a character that held PHD will still prevent negative pills from spawning, but will no longer identify pills until used.
  • As bad pills will turn into good pills, it is possible for two different colored pills to have the same effect.
  • Multiple copies of PHD will not yield more coins when using a Blood Donation Machine or IV Bag.

Interactions[ | ]

In-game Footage[ | ]

Trivia[ | ]

  • PHD stands for Doctor of Philosophy (Ph.D.) and it's the most common degree at the highest academic level awarded following a course of study. Doctorates can be in any study, in Isaac's case, medicine.
  • Collectible MEAT! iconMEAT!, (in Afterbirth † and Repentance)Collectible YO LISTEN! iconYO LISTEN!, Collectible PHD iconPHD, G FUEL!, and (in Repentance)Collectible TMTRAINER iconTMTRAINER are the only ALL CAPS items in the game.