sentence: Some drugs are illegal because they are very addictive.
sentences_before: It is very important to keep taking the drug until the doctor says to stop because someone can feel better but still be sick. When a doctor says what drug to take, how much of it, and for how long, it is called a prescription. Drugs may cause addiction.
sentences_after: These drugs are really expensive, too.
concept_name: drug
headings: Drug