The drug featured in the movie "Pain Hustlers" is called Lonafen, which is a synthetic form of fentanyl. In the movie, Lonafen is described as a potent painkiller for "breakthrough cancer pain" that is highly addictive and is created and administered by a fictional pharmaceutical company called Zanna. However, Lonafen is not a real drug. It was modeled after Subsys, a real medication that was initially offered in 2012. Subsys is an oral fentanyl spray that is highly addictive and was developed and sold by Insys Therapeutics, a pharmaceutical company that faced consequences in real life for peddling through "speaker programs".