Animal Sedative aka Rhino Tranq
Silently has become the dominant additive to Fentanyl, first appearing in May 2024.
As of January 2025, more frequently detected in fentanyl than xylazine, Medetomidine is now found in 87% of Philadelphia drug samples. Medetomidine is 200 times more potent than xylazine (DEA).
Major ramifications is worsening and more severe withdrawal symptoms to include intractable vomiting, sweating, tremors, tachycardia, resulting in Advance Critical Care Intervention for withdrawal.