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A syringe with a purple substance inside.

Effects

Isaac gets tumors/growths around his face. Increases Damage by 1 and Speed by 0.4.

Related Achievements

Commoncold
"The Common Cold" - Collect two of the following items in one playthrough: Roid Rage, The Virus, or Growth Hormones.

Trivia

  • Growth Hormones' visual effects are not visible on Eve at the beginning of every room, but they get active when she gets hit.
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