3 legal drugs:

• alcohol
• caffeine
• tobacco

3 Illegal drugs:

• cocaine
• marijuana
• heroin

3 Can be legal or illegal drugs:

• Marijuana is generally an illegal drug. But some states allow doctors to prescribe it to people for some conditions, and some have passed laws making it legal to sell marijuana to adults for personal use.
• Cigarettes and alcohol are two other kinds of legal drugs. In the United States, adults 21 and older can buy cigarettes and alcohol. But smoking and excessive drinking are not healthy for adults, and they're off limits for kids.