Severe intoxication may produce confusion, rambling or incoherent speech, anxiety, psychotic behavior, ringing in the ears, hallucinations and irreversible brain damage. Intense fatigue and depression resulting from use can lead to suicide. Large doses may result in convulsions and death from cardiac or respiratory arrest. These drugs are usually taken intravenously. Users may become addicted or dependent on the drug very quickly.
Users experience impaired judgment, slurred speech, and drowsiness.
Overdose is manifested by coma, shock, and depressed respiration, with the possibility of death from respiratory arrest. Withdrawal from heroin includes sweating, diarrhea, fever, insomnia, irritability, nausea and vomiting, and muscle and joint pains. These drugs impair and distort your perception of your surroundings, cause bizarre mood changes and result in visual hallucinations that involve geometric forms, colors, and persons or objects. Withdrawal may require psychiatric treatment for the accompanying persistent psychotic states. Suicide is not uncommon.