somnogenA somnogen is any substance that causes sleepiness. Related web pages: Glossary: GABA-related hypersomniaEmory Researchers Announce Discovery of Substance That May Be Linked to Excessive SleepingGlossaryAntibiotic May Decrease EDS in GABA-Related HypersomniaWhat’s New in the Diagnosis and Treatment of Hypersomnia in 2016?Hypersomnia Research-Where We Are and Where We Are HeadedEmory Team to Receive Grant to More Fully Understand and Release the Parking Brake!Submission to the FDA’s Regarding Hypersomnias<< Back to glossary index