When I was younger the 'in' thing was poppers and we did them all the time, almost every weekend for around a year. Alot of my money was spent on them. Eventually I got extremely bad head aches during the week and I'm sure it was down to the Poppers.
They are a risky drug and if they are mis used they can do some damage so be careful hun!!
Have a look on here (hopefully it works)
http://www.talktofrank.com/drugs.aspx?id=198
PM me if you want to talk more about it = )
Take care,
Charlotte xxx