I think historians will look back at the early 21st century and note that Soma was best served digitally, rather than chemically.
People are better informed than ever, read more than ever, and are more satisfied with their lives than ever. You dismiss this monumental progress by calling it a drug.
http://www.pbs.org/newshour/rundown/2013/05/chart-americas-r...
what is Soma?
...Soma is a hallucinogen that takes users on enjoyable, hangover-free "holidays". It was developed by the World State to provide these inner-directed personal experiences within a socially managed context of State-run 'religious' organizations; social clubs.
Or perhaps this: http://en.wikipedia.org/wiki/Soma
In it, the government uses entertainment and technology to keep people within their assigned classes as opposed to military force and surveillance.