Drug injection taking drugs, injection is favoured by some people as the full effects of the drug are experienced very quickly, typically in five to ten seconds. It also bypasses first-pass metabolism in the liver, resulting in higher bioavailability and efficiency for many drugs (such as morphine or diacetylmorphine/heroin; roughly two-thirds of which is destroyed in the liver when consumed orally) than oral ingestion would. The effect is that the person gets a stronger (yet shorter-acting) effect from the same amount of the drug. Drug injection is therefore often related to substance dependence. In a recreational context, the shorter, more intense "high"
Politics of drug abuse immoral) and/or harmful to the user or society, or both. What might be called "drug abuse" by some would not necessarily be considered so by others. … For these reasons, the term "drug abuse" is avoided here" The World Health Organization presently prefers to use the terms "harmful use" and "hazardous use" (of drugs), in order to distinguish between the health effects of drug abuse rather than the social consequences. Another preferred term is "drug misuse", defined as the ""use of a substance for a purpose not consistent with legal or medical guidelines, as in the non-medical use of prescription