1. Drug Vocab Drug: a chemical substance (excluding nutrients)
that has an effect on your mind or body
Medicine: a drug used to treat/cure/prevent an illness

2. Tolerance: After taking a drug for a while, it starts to lose effectiveness. You need more of the drug to get the same effect. Withdrawal: After taking the drug for a while, when you stop taking it, you feel negative effects (usually, withdrawal effects are the opposite of the drug effects) Dependence: You need to keep taking the drug to feel normal (to avoid withdrawal effects) Addiction: You can’t control your drug use. You keep taking it even if it’s negatively affecting your daily life.