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Depressant
A substance that reduces the functional or nervous activity of the body, often used to induce sedation.
Stimulant
A substance that raises levels of physiological or nervous activity in the body, generally increasing alertness, attention, and energy.
Opiates
A group of drugs derived from opium used for their analgesic properties, but also known for their high potential for addiction.
Synthetic Opiate
A man-made drug designed to mimic the pain-relieving properties of natural opium-derived substances.
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