Crank (Crank Series #1) by Ellen Hopkins

The #1 New York Times bestselling tale of addiction- the first in the Crank trilogy- from master poet Ellen Hopkins. Life was good before I met the monster. After, life was great, At least for a little while. Kristina Snow is the perfect daughter: gifted high school junior, quiet, never any trouble. Then, Kristina meets the monster: crank. And what begins as a wild, ecstatic ride turns into a struggle through hell for her mind, her soul- her life.