In-game pickup line
“Speed up + size down”
Mechanics
What Caffeine Pill does
- It grants 0.3 speed and reduces Isaac's size.
- A random pill appears as a separate pickup when the item is taken.
In a run
Practical note
Check the pill's color before using it if its effect is still unknown.
Reference
Game data and sources
The item ID, quality and pool listings, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ.
