MERRITT, B.C. — Interior Health is warning Merritt residents to be aware of toxic drugs circulating in the community. The substance — sold as down, dope, tranq, or fentanyl — is described as light green chunks, pebbles or powder. Interior Health (IH) said the warning comes after a sample was found to contain cychlorphine and medetomidine, and has been linked to multiple overdoses. “Cychlorphine is a potent synthetic opioid. It is thought to be a…