When fentanyl slows your breath and xylazine traps it, the clock starts ticking.

PhD candidate Catherine Demery takes us inside her fight to understand how fentanyl and xylazine shut down breathing in different ways—work that blends GPCR pharmacology, animal models, and real-time street data to combat the opioid crisis.
Watch the video version of this podcast episode: Ep 172 with Catherine Demery