The Pink Pill is 1 Red Pill and 2 White Pills mixed together. They are commonly found at websites like patriots.win.

Becoming addicted to Pink Pills leads you down a path where you will ultimately need to mainline a Clown Pill or a Purple Pill to survive when they run out of White Pills to keep the ratio correct. This happens because you're not accustomed to consuming Red Pills without a good mix of White Pills to soften them.