However, some people may be more sensitive to certain medications so that the high end of the therapeutic range of a drug may be toxic for them. Exposure to chemicals, plants, and other toxic substances that can cause harm are called poisonings. The higher the dose or the longer the exposure, the worse the poisoning. Two examples are carbon monoxide poisoning and mushroom poisoning. People respond differently to a drug overdose.
Treatment is tailored to the individual's needs.
Drug overdoses can involve people of any age. The cause of a drug overdose is either by accidental overuse or by intentional misuse. Accidental overdoses result from either a young child or an adult with impaired mental abilities swallowing a medication left within their grasp. Young children may swallow drugs by accident because of their curiosity about medications they may find. Drug overdoses in this age group are generally caused when someone accidentally leaves a medication within the child's reach.