In the late 19th century doctors and pharmacists became increasingly aware of morphine 's addictive properties, and in 1874 chemist Alder Wright began synthesizing morphine in his lab at a London hospital. …show more content…
The country where is really took off was the United States, where there was already a large population of morphine addicts. Manufacturer of cough syrup began lacing their products with heroin. In a 1900 Boston Medical and Surgical Journal, heroine was described as “possessing many advantages over morphine,” it was also stated in the journal “... it is not hypnotic, and there 's no danger of acquiring a habit.” The American Medical Association approved heroin in 1906, with strong reservations about a habit that was readily …show more content…
Heroin produces a profound tolerance and physical dependence, which are motivating factors for compulsive use and abuse. Administration of heroin gives the user a euphoric sensation. There are three ways for heroin can be administered, it is most commonly injected; however heroin can be smoked, or inhaled through the nose. Typically, a heroin user may inject up to four times a day. Intravenous injection provides the greatest intensity, and most rapid onset of euphoria (approximately 7 to 8 seconds), while muscular injection produces a slower onset of euphoria (approximately 5 to 8 minutes). When smoked or snorted, the effects are usually felt within 10 to 15 minutes. All forms of administration are