Drug prosecutions turn on three variables most people never think about: what the substance is classified as, how much of it there was, and whether the government can prove an intent to distribute rather than to use. This article explains the schedule system, the difference between simple possession and distribution charges, and how weight thresholds convert an ordinary case into one carrying a mandatory minimum. It covers conspiracy liability and why it sweeps in people who never touched the drugs, the prior-conviction enhancement that must be filed before trial, and the forfeiture proceedings that run alongside the criminal case. It also covers the diversion and treatment-court track that resolves a large share of cases without a conviction, including who qualifies and what participation actually requires. Examples follow two defendants arrested in the same car. Readers finish understanding what drives exposure and where the real leverage is.