Effect of drugs on our bodies and minds (Ecstasy), health and medicine homework help

Watch the following video on Ecstasy (or at least skim through it).
https://www.youtube.com/watch?v=uTJaH79pskU&list=PL1067E3150E07E824

In a two page (no less than 500 words), answer the following questions:

What is the active ingredient in the drug and what parts of the brain does it affect?
How does it work?
Is it addictive? If so, how does it become addictive?
Describe the changes in consciousness the drug causes (positive and negative).
What are the consequences of long-term use of the drug?
What did you learn about the drug that surprised you?