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opium

(OH-pee-um)
A highly addictive, natural substance that comes from the seed pods of the poppy plant, Papaver somniferum. Opium contains chemicals that affect the brain, causing pain relief and a feeling of euphoria. It is used to make medicines like morphine and codeine. Opium is dangerous when misused. High doses can slow breathing, cause unconsciousness, or lead to death.
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