Editor's note: This is the first in a three-part series examining the debate about a possible methadone clinic in Champaign. Thursday: Inside a methadone clinic.

After using heroin regularly since the mid-1980s, Champaign resident Katy Kalman decided it was finally time to quit in September 2000.

But she knew that most people don't quit heroin because they become so physically addicted to it. Longtime users initially experience euphoric highs and end up taking heroin just to keep from getting sick.

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