drug overdose

The drug overdose - The taking of an excessive amount of a drug, which may cause toxic effects (see drug poisoning).

By mouth - Drugs are digested and absorbed from the intestine in the same way as nutrients. How quickly the tablet or liquid works depends on how rapidly it is absorbed. This, in turn, depends on such factors as the drug’s composition, how quickly the drug dissolves and the effect of digestive juices on it. Some drugs are inactivated as soon as they reach the liver and never enter the circulation.

By injection - Drugs given by injection have a very rapid effect and are given if digestive juices would destroy a drug.

Topical - These drugs have a local effect on the parts of the body that are exposed to them as well as a systemic (generalized) effect if some of the drug is absorbed into the bloodstream from the site of application.


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