Definition
of Drug: A
drug is a chemical that has medicinal, performance-enhancing or intoxicating
effects when introduced into the body of a human or other animal. Substances
which are foods are not considered to be drugs, although active ingredients
from foods make are purified for use as drugs. Also, some chemicals used as
drugs are identical to substances made in the body (e.g., insulin,
testosterone). The chemical is considered a drug only if it is introduced into
the body from the outside, such as by ingestion, injection or topical
application.
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