Definition: A substance used to treat an illness, relieve a symptom, or modify a chemical process in the body for a specific purpose.

Alright class, settle down and listen close, Let’s talk about ‘drugs,’ let’s make this lesson dose! The dictionary's right, it gives a clever plea, "A substance used for medicine, you see!" It's true, some drugs do help us feel alright, Like pills to ease a fever, shining bright. They fight off sickness, chase the pain away, And help our bodies function in a healthy way! But now we need to be very clear and wise, There’s another meaning behind these words, disguised. Sometimes ‘drugs’ aren't for healing or for cure, They can change your mind, make you feel unsure. These are substances that can cause a lot of harm, And disrupt the balance, like a brewing storm. They mess with chemistry inside your head, Leading to problems, filling you with dread. So remember this: Drugs can be helpful and good, When used responsibly, as they should! But taking them without a doctor’s care, Can lead to dangers we shouldn't share. Does that make sense? Any questions for me? Let’s discuss it calmly, honestly, you see!