Hello
Cocaine itself is out of your body in 3-4 hours.cocaine makes you breathe heavier, harder and forces your heart to pump much faster. Your pupils dilate, your blood pressure goes through the roof, and your body temperature rises and certain other psychological & health problems.But these symptoms mostly appear after a long term usage of cocaine.
One time or rarely used cocaine doesnot cause much danger to health but still its harmful to the body.
Hope this helped.
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Doctor Manju