Drugs
Science: KS3, topic 1.1.25
Drugs
Drugs have a wide range of chemical effects on the body. Some drugs are legal, rigorously tested, and safe to use. Others have side effects and must be used with caution. Some drugs are illegal.

Painkiller
- Used to reduce the symptoms of pain such as a headache.
- Aspirin is one example of a painkiller.

Depressant
- Used to slow down your reaction time and lower the activity within the brain.
- Alcohol is an example.

Stimulant
- Used to improve your reaction time and increases the activity within the brain.
- Caffeine is an example.

Hallucinogen
- Used to change what you think you can hear as well as see.
- Marijuana is an example.

Performance enhancer
- Used to improve fat loss and muscle development.
- Steroids are an example.
Test yourself on Drugs
A student drinks a cup of coffee to react faster during a test. What type of drug is at work, and what effect does it have on the brain?
Select the correct statement in each pair.
An athlete takes a drug to build muscle and lose fat faster before a competition. What type of drug are they most likely using?