What is the orexin system and why is it so important?

This article was first published on October 27, 2022. It was last reviewed and updated on October 28, 2022.  In recent years, several medications called Dual Orexin Receptor Antagonists (DORAs) have been approved by the FDA as treatments for insomnia. This has made it necessary for us to know a bit about what orexin is,…