Narcotics and analgesics:Demerol, Oxycontin, Tylenol 3&4, Dilaudid (hydromorphone), Morphine, Codeine, Percocet, Methadone. Street names: smack, horse, junk, brown sugar, mud, big h, black tar. Effects: euphoria, drowsiness, impaired driving ability, reduced vision, relief of pain, constipation, decreased respiratory, addiction, coma. Dangers: malnutrition, infection, risks associated with unsterile and shared needles, reaction to contaminants, AIDS, hepatitis, death from overdose. Detection time: approx. 2 days.