Makes you drowsy, allows you to visit the Man Who Wears a Box when sleeping. If you are out of batteries, you will receive some after waking up.

If you're out of food and visit the Man Who Wears a Box, he will provide You with some food.

If the player takes six or more green pills, "You" will begin to remark about the large amount of green pills he's taken upon waking.

Note: To have a better mental health, you can take The Green Pill without any other pills. Mental health can be found on the Psych Report.