What is heroin?
Heroin is a depressant, it doesn't necessarily make you feel depressed, but instead slow you down and the activities you do. It slows down the nervous system and message going between the brain and the body.
How is heroin used?
Heroin is usually injected, sniffed/snorted, or smoked. When it is smoked/sniffed, the effects are usually felt within 10-15 minutes.