Wednesday, 18 November 2015

Generic Diacetyl Morphine by Generic

Generic Diacetyl Morphine by Generic



Product Description
diacetylmorphine or morphine diacetate (INN)), also known as diamorphine (BAN), and colloquially as H, smack, horse, brown, black, tar, and other names, is an opioid analgesic synthesized by C.R. Alder Wright in 1874 by adding two acetyl groups to the molecule morphine, found in the opium poppy. It is the 3,6-diacetyl ester of morphine. Heroin itself is an active drug, but it is also converted into morphine in the body.

When used in medicine, it is typically used to treat severe pain, such as that resulting from a heart attack or a severe injury. The name "heroin" is only used when being discussed in its illegal form. When it is used in a medical environment, it is referred to as diamorphine. The white crystalline form considered "pure heroin" is usually the hydrochloride salt, diacetylmorphine hydrochloride.

Illicit heroin is sometimes available in freebase form, dulling the sheen and consistency to a matte-white powder. Because of its lower boiling point, the freebase form of heroin is also smokable. It is prevalent in heroin coming from Afghanistan, which as of 2004 produced roughly 87% of the world supply in illicit raw opium. However, production in Mexico has risen six times from 2007 to 2011, changing that percentage and placing Mexico as the second largest opium producer in the world.

Mexican cartels are also known to produce a third type of illicit heroin, commonly called black tar, which results from a simplified, quicker synthesis procedure and contains a high percentage of morphine derivates other than heroin, such as 6-Monoacetylmorphine (6-MAM).

As with other opioids, diacetylmorphine is used as both an analgesic and a recreational drug. Frequent and regular administration is associated with tolerance and physical dependence. Internationally, diacetylmorphine is controlled under Schedules I and IV of the Single Convention on Narcotic Drugs. It is illegal to manufacture, possess, or sell diacetylmorphine without a license in almost every country.

Under the chemical names diamorphine and diacetylmorphine, heroin is a legally prescribed controlled drug in the United Kingdom, and is supplied in tablet or injectable form for the same indications as morphine is, often being preferred over morphine due to its lower side-effect profile.[citation needed]It is also available for prescription to long-term users as a form of opioid replacement therapy in the Netherlands, United Kingdom, Switzerland, Germany, and Denmark, alongside psycho-social care—in the same manner that methadone or buprenorphine are used in the United States or Canadaand a similar programme is being campaigned for by liberal political

Medical use:
Under the chemical name diamorphine, diacetylmorphine is prescribed as a strong analgesic in the United Kingdom, where it is given via subcutaneous,intramuscular, intrathecal or intravenous route. Its use includes treatment for acute pain, such as in severe physical trauma, myocardial infarction, post-surgical pain, and chronic pain, including end-stage cancer and other terminal illnesses. In other countries it is more common to use morphine or other strong opioids in these situations. In 2004, the National Institute for Health and Clinical Excellence (a non-departmental public body of the Department of Health in the United Kingdom) produced guidance on the management of caesarian section, which recommended the use of intrathecal or epidural diacetylmorphine for post-operative pain relief.

In 2005, there was a shortage of diacetylmorphine in the UK, because of a problem at the main UK manufacturers. Because of this, many hospitals changed to using morphine instead of diacetylmorphine. Although there is no longer a problem with the manufacturing of diacetylmorphine in the UK, some hospitals there have continued to use morphine. The majority, however, continue to use diacetylmorphine, and diacetylmorphine tablets are supplied for pain management.

Diacetylmorphine continues to be widely used in palliative care in the United Kingdom, where it is commonly given by the subcutaneous route, often via a syringe driver, if patients cannot easily swallow oral morphine solution. The advantage of diacetylmorphine over morphine is that diacetylmorphine is more fat soluble and therefore more potent (by injection only), so smaller doses of it are needed for the same analgesic effect. Both of these factors are advantageous if giving high doses of opioids via the subcutaneous route, which is often necessary in palliative care.

The medical use of diacetylmorphine (in common with other strong opioids such as morphine, fentanyl and oxycodone) is controlled in the United Kingdom by the Misuse of Drugs Act 1971. In the UK, it is a class A controlled drug and as such is subject to guidelines surrounding its storage, administration and destruction. Possession of Diamorphine without a prescription is an arrestable offence. When Diamorphine is prescribed in a hospital or similar environment, its administration must be supervised by 2 people who must then complete and sign a CD register detailing the patients name, amount, time, date and route of administration. In the case of a doctor administering diamorphine, then he/she may administer the drug alone, however the rule requiring two registered practitioners (e.g. a nurse, midwife or another doctor) to sign the CD register still applies. The use of a "witness" when administering Diamorphine is to avoid the possibility of the drug being diverted onto the black market.

For safety reasons, many UK National Health Service hospitals now only permit the administration of intravenous diamorphine in designated areas. In practice this usually means a critical care unit, an accident and emergency department, operating theatres by an anaesthetist or nurse anaesthetist or other such areas where close monitoring and support from senior staff is immediately available. However, administration by other routes is permitted in other areas of the hospital. This includes subcutaneous, intramuscular, intravenously as part of a patient controlled analgesia setup, and as an already established epidural infusion pump. Subcutaneous infusion, along with subcutaneous and intramuscular 'bolus' administration is often used in the patient's own home, in order to treat severe pain in terminal illness.

Diacetylmorphine is also used as a maintenance drug to treat certain groups of addicts, normally long term chronic IV heroin users, and even in these situations it is only prescribed following exhaustive efforts at treatment via other means. It is thought that heroin users can walk into a clinic and walk out with a prescription but the process takes many weeks before a prescription for Diacetylmorphine is issued. Though this is somewhat controversial among proponents of a zero tolerance drug policy, it has proven superior to methadone in improving the social and health situation of addicts. See: Heroin prescription for addicts

Recreational use:
Diacetylmorphine, almost always still called by its original trade name of heroin in non-medical settings, is used as a recreational drug for thetranscendent relaxation and intense euphoria it induces. Anthropologist Michael Agar once described heroin as "the perfect whatever drug." Tolerancedevelops quickly, and users need more of the drug to achieve the same effects. Its popularity with recreational drug users, compared to morphine, reportedly stems from its perceived different effects. In particular, users report an intense rush, an acute transcendent state of euphoria, which occurs while diacetylmorphine is being metabolized into 6-monoacetylmorphine (6-MAM) and morphine in the brain. Some believe that heroin produces more euphoria than other opioids upon injection; one possible explanation is the presence of 6-monoacetylmorphine, a metabolite unique to heroin – although a more likely explanation is the rapidity of onset. While other opioids of recreational use produce only morphine, heroin also leaves 6-MAM, also a psycho-active metabolite. However, this perception is not supported by the results of clinical studies comparing the physiological and subjective effects of injected heroin and morphine in individuals formerly addicted to opioids; these subjects showed no preference for one drug over the other. Equipotent injected doses had comparable action courses, with no difference in subjects' self-rated feelings of euphoria, ambition, nervousness, relaxation, drowsiness, or sleepiness.

Short-term addiction studies by the same researchers demonstrated that tolerance developed at a similar rate to both heroin and morphine. When compared to the opioids hydromorphone, fentanyl, oxycodone, and pethidine/meperidine, former addicts showed a strong preference for heroin and morphine, suggesting that heroin and morphine are particularly susceptible to abuse and addiction. Morphine and heroin were also much more likely to produce euphoria and other positive subjective effects when compared to these other opioids.

Some researchers have attempted to explain heroin use and the culture that surrounds it through the use of sociological theories. In Righteous Dopefiend, Philippe Bourgois and Jeff Schonberg use anomie theory to explain why people begin using heroin. By analyzing a community in San Francisco, they demonstrated that heroin use was caused in part by internal and external factors such as violent homes and parental neglect. This lack of emotional, social, and financial support causes strain and influences individuals to engage in deviant acts, including heroin usage. They further found that heroin users practiced "retreatism", a behavior first described by Howard Abadinsky, in which those suffering from such strain reject society's goals and institutionalized means of achieving them.

Prescription for addicts:
Main article:
Heroin assisted treatment
The UK Department of Health's Rolleston Committee Report in 1926 established the British approach to diacetylmorphine prescription to users, which was maintained for the next 40 years: dealers were prosecuted, but doctors could prescribe diacetylmorphine to users when withdrawing from it would cause harm or severe distress to the patient. This "policing and prescribing" policy effectively controlled the perceived diacetylmorphine problem in the UK until 1959 when the number of diacetylmorphine addicts doubled every 16 months during a period of ten years, 1959–1968. In 1964 the Brain Committee recommended that only selected approved doctors working at approved specialised centres be allowed to prescribe diacetylmorphine and benzoylmethylecgonine (cocaine) to users. The law was made more restrictive in 1968. Beginning in the 1970s, the emphasis shifted to abstinence and the use of methadone; until now only a small number of users in the UK are prescribed diacetylmorphine.

In 1994, Switzerland began a trial diamorphine maintenance program for users that had failed multiple withdrawal programs. The aim of this program was to maintain the health of the user by avoiding medical problems stemming from the illicit use of diacetylmorphine. The first trial in 1994 involved 340 users, although enrollment was later expanded to 1000 based on the apparent success of the program.

The trials proved diamorphine maintenance to be superior to other forms of treatment in improving the social and health situation for this group of patients.It has also been shown to save money, despite high treatment expenses, as it significantly reduces costs incurred by trials, incarceration, health interventions and delinquency.

Patients appear twice daily at a treatment center, where they inject their dose of diamorphine under the supervision of medical staff. They are required to contribute about 450 Swiss francs per month to the treatment costs. A national referendum in November 2008 showed 68% of voters supported the plan, introducing diacetylmorphine prescription into federal law. The trials before were based on time-limited executive ordinances.

The success of the Swiss trials led German, Dutch, and Canadian cities to try out their own diamorphine prescription programs. Some Australian cities (such as Sydney) have instituted legal diacetylmorphine supervised injecting centers, in line with other wider harm minimization programs.

Since January 2009, Denmark has prescribed diamorphine to a few addicts that have tried methadone and subutex without success. Beginning in February 2010, addicts in Copenhagen and Odense will be eligible to receive free diacetylmorphine. Later in 2010 other cities including Ã…rhus and Esbjerg will join the scheme. In total, around 230 addicts will be able to receive free diacetylmorphine. However, Danish addicts will only be able to inject heroin according to the policy set by Danish National Board of Health. Of the estimated 1500 drug users who do not benefit from the current oral substitution treatment, approximately 900 will not be in the target group for treatment with injectable diacetylmorphine, either because of "massive multiple drug abuse of non-opioids" or "not wanting treatment with injectable diacetylmorphine".

In July 2009, the German Bundestag passed a law allowing diacetylmorphine prescription as a standard treatment for addicts; a large-scale trial of diacetylmorphine prescription had been authorized in that country in 2002.

Detection in biological fluids:
The major metabolites of diacetylmorphine, 6-MAM, morphine, morphine-3-glucuronide and morphine-6-glucuronide, may be quantitated in blood, plasma or urine to monitor for abuse, confirm a diagnosis of poisoning or assist in a medicolegal death investigation. Most commercial opiate screening tests cross-react appreciably with these metabolites, as well as with other biotransformation products likely to be present following usage of street-grade diacetylmorphine such as 6-acetylcodeine and codeine. However, chromatographic techniques can easily distinguish and measure each of these substances. When interpreting the results of a test, it is important to consider the diacetylmorphine usage history of the individual, since a chronic user can develop tolerance to doses that would incapacitate an opiate-naive individual, and the chronic user often has high baseline values of these metabolites in his system. Furthermore, some testing procedures employ a hydrolysis step prior to quantitation that converts many of the metabolic products to morphine, yielding a result that may be 2 times larger than with a method that examines each product individually.

Adverse effects:
Like most opioids, unadulterated heroin does not cause many long-term complications other than dependence and constipation. Due to increased vulnerability to infectious agents, particularly viruses and intracellular bacteria resulting from the suppression of various cell-mediated immune pathways, the use of heroin and other opioids, even at normal therapeutic levels, may lead to opportunistic infections, which carry their own lasting effects. The average purity of street heroin in the UK varies between 30% and 50% and heroin that has been seized at the border has purity levels between 40% and 60%; this variation has led to people suffering from overdoses as a result of the heroin missing a stage on its journey from port to end user, as each set of hands that the drug passes through adds further adulterants, the strength of the drug reduces, with the effect that if steps are missed, the purity of the drug reaching the end user is higher than they are used to and because they are unable to tolerate the increase, an overdose ensues. Intravenous use of heroin (and any other substance) with non-sterile needles and syringes or other related equipment may lead to:

The risk of contracting blood-borne pathogens such as HIV and hepatitis by the sharing of needles
The risk of contracting bacterial or fungal endocarditis and possibly venous sclerosis
Abscesses
Poisoning from contaminants added to "cut" or dilute heroin
Physical dependence can result from prolonged use of all opioids, resulting in withdrawal symptoms on cessation of use
Decreased kidney function (although it is not currently known if this is because of adulterants or infectious diseases)

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