What drug use to be called 747's?

Question

a recreational drug in the 70's and 80's

Answer 1

A Quaalude was a popular pharmaceutical scored with 714 on the tablet.  Generic for Methaqualone.

Answer 2

Lemmons 714

Answer 3

I first heard that in the 70's.

It was Qualudes, a legal sedative that was also used as an illegal recreational drug.  They had (and probably still have) the number written on each pill.  

Guys I knew who used the drug (or bragged about it anyway, to be "cool") called it "flight 747")

http://answers.yahoo.com/question/index?...

(I added a link to a previous Yahoo question on this.  There's some diversity of opinion on what number was imprinted on the pills.  It might have been "flight 714", but you get the idea)