Smoked administration route heroin

Opioids are administered in several ways. Opium was most commonly taken recreationally by smoking, but intravenous administration has become most common since the isolation of opium alkaloids and invention of the hypodermic needle. The development of heroin from morphine at the turn of the twentieth century led to more intense euphoric effects and greater risk for addiction. Heroin may also be snorted, or it can be smoked when added to a medium such as tobacco. Medically, opioids are commonly given through oral, subcutaneous, intravenous, transdermal, or rectal routes. 

In opiate abuse, smack ( junk, jazz, stuff, China white mostly heroin) is self administered by injection ( mainUning ) so as to avoid first-pass metabolism and to achieve a faster rise in brain concentration. Evidently, psychic effects ( kick, buzz, rush ) are especially intense with this route of administration. The user may also resort to other more unusual routes opium can be smoked, and heroin can be taken as snuff (B). 

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