Gastric Lavage: Medical procedure involving the emptying of contents in the stomach through the use of a tube inserted through the nose or mouth. It is performed to remove poisons or relieve pressure due to intestinal blockages or during surgery.Ipecac: A syrup made from the dried rhizomes of two different species, CEPHAELIS ipecacuanha and C. acuminata. They contain EMETINE, cephaeline, psychotrine and other ISOQUINOLINES. Ipecac syrup is used widely as an emetic acting both locally on the gastric mucosa and centrally on the chemoreceptor trigger zone.Charcoal: An amorphous form of carbon prepared from the incomplete combustion of animal or vegetable matter, e.g., wood. The activated form of charcoal is used in the treatment of poisoning. (Grant & Hackh's Chemical Dictionary, 5th ed)Drug Overdose: Accidental or deliberate use of a medication or street drug in excess of normal dosage.Poisoning: A condition or physical state produced by the ingestion, injection, inhalation of or exposure to a deleterious agent.Antidotes: Agents counteracting or neutralizing the action of POISONS.Suicide, Attempted: The unsuccessful attempt to kill oneself.