PULSE POINTS❓WHAT HAPPENED: Medetomidine, a potent animal sedative known as “rhino tranq,” is increasingly being used as an adulterant in fentanyl distributed on American streets. Newsletter Need to Know. Your free, daily feed from The National Pulse. Thank You! You are now subscribed to our newsletter. 👤WHO WAS INVOLVED: Drug cartels and public health officials … Continue reading The Cartels Are Blending Fentanyl With Chinese Animal Tranquilizer to Boost Addiction.