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Here are the clues. Preceding each clue is the number of letters in the answer.

Clue 1: 5 letters. This is the king pin of natural and derivative narcotics.
Clue 2: 8 letters. This drug is about 80x more potent than heroin.
Clue 3: 11 letters. Breathing in this synthetic opioid can cause death.
Clue 4: 8 letters. It appears the person is sleeping but they are hearing what you are saying and easily awakened.
Clue 5: 5 letters. How the voice of a narcotic user sounds.
Clue 6: 9 letters. This refers to man made opioids.
Clue 7: 11 letters. Also known as Vicodin.
Clue 8: 6 letters. First thought to be non-addictive.
Clue 9: 7 letters. This prescription is non-narcotic but is being abused as it works on same brain pathways.
Clue 10: 7 letters. Spoons, tinners, bottoms as soda cans and bottle caps are all used as ____.