Pharmacology A drug addict was caught hold of by narcotic drug addiction department. He was found to have jet black tongue and teeth. Likely drug addiction is of: A Diazepam B (Cannabis) Charas C Cocaine D Heroin 💡 Explanation A drug addict was caught hold of by narcotic drug addiction department. He was found to have jet black tongue and teeth. Likely drug addiction is of: ✓ Correct Answer: C. Cocaine