Also said to be a "cheap and clean" alternative to other narcotics.
Used to control ones moods, several other drugs were also under development but they never made it to the streets. These include -
Each drug had a trademark colour, as implied by the name, Red Ramrod was red, Blue Velvet was blue, etc.
Each drug also having a different effect. The drug came in a small plastic pod with a needle on the end, it was injected directly into the jugular/neck. Fast acting. Effects lasting for one or two days before the user experiences "the shakes" and requires another dose or "shot"
Cain takes credit for the drug, although he had a scientist working on the formula of the drugs, “Hank”.
Cain looked upon his drugs as being a way to liberate people, and bring them peace. He himself was an addicted user, and this played the role in his downfall in the movie.
Red Ramrod is the basic mood modifier, making you generally happy-go-lucky and giving the feeling that all is well in the (or your own little) world. Feeling of a constant high is experienced by the Red Ramrod users.
One can only assume what the White Noise and Black Thunder do, as they were never used in the movie, only mentioned.
But the names pretty much speak for themselves.