If the victim has collapsed or is not breathing, call local emergency services at 911.Symptoms of overdose may include: nauseavomitingstomach painheadachefeverjoint painitchingswelling of the hands, arms, feet, ankles, or lower legssore throat, fever, chills, and other signs of infectionunusual bruising or bleedingblistering or peeling of the skinnumbness, burning or tingling of the hands or feety