In other words, they decided that Soma should be considered a controlled substance because similar drugs like barbital, meprobamate and chlordiazepoxide (Librium) were already controlled substances.

What is a “Soma Coma?”

A “Soma Coma” is an altered state of mind that leaves an individual stupefied, incoherent, and nearly unconscious. This disassociation from reality is hardly therapeutic and potentially dangerous if not deadly. Many examples of “soma comas” exist on YouTube. One example has the following headline:

                  “Geez, can't a woman enjoy her Soma Coma”

1.  For more Miltown information:   http://en.wikipedia.org/wiki/Meprobamate
2. Marketing examples found on:   http://www.homeeverafter.com/miltown-a-piece-of-1950s-homemaker-history 
3. Obtained from:   http://www.deadiversion.usdoj.gov/fed_regs/rules/2011/fr1212_10.htm