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FAQ About Heroin

What is heroin?
How is heroin used?
What are the short-term effects of heroin use?
What are the long-term effects of heroin use?
What are the medical complications of chronic heroin abuse?
How does heroin abuse affect pregnant women?
Why are heroin users at special risk for contracting HIV/AIDS and hepatitis B and C?
Tolerance, Addiction, and Withdrawal
What are the symptoms of heroin withdrawal?
Are there any other problems that can occur from heroin addiction?

What is heroin?

Heroin is a highly addictive drug, and its use is a serious problem. It is both the most abused and the most rapidly acting of the opiates. It is typically sold as a white or brownish powder or as the black sticky substance known on the streets as "black tar heroin."

Recent studies suggest a shift from injecting heroin to snorting or smoking because of increased purity and the misconception that these forms of use will not lead to addiction.

HeroinAlthough purer heroin is becoming more common, most street heroin is "cut" with other drugs or with substances such as sugar, starch, powdered milk, or quinine. Street heroin can also be cut with strychnine or other poisons. Because heroin abusers do not know the actual strength of the drug or its true contents, they are at risk of overdose or death. Heroin also poses special problems because of the transmission of HIV and other diseases that can occur from sharing needles or other injection equipment.

Heroin poppiesHeroin is processed from morphine, a naturally occurring substance extracted from the seedpod of the Asian poppy plant. Heroin usually appears as a white or brown powder. Street names for heroin include "smack," "H," "skag," and "junk." Other names may refer to types of heroin produced in a specific geographical area, such as "Mexican black tar."
 

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How is heroin used?

Heroin is usually injected, sniffed/snorted, or smoked. Typically, a heroin abuser may inject up to four times a day. Intravenous injection provides the greatest intensity and most rapid onset of euphoria (7 to 8 seconds), while intramuscular injection produces a relatively slow onset of euphoria (5 to 8 minutes). When heroin is sniffed or smoked, peak effects are usually felt within 10 to 15 minutes. Although smoking and sniffing heroin do not produce a "rush" as quickly or as intensely as intravenous injection, NIDA researchers have confirmed that all three forms of heroin administration are addictive.

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What are the short-term effects of heroin use?

  •  "Rush"
  • Depressed respiration
  • Clouded mental functioning
  • Nausea and vomiting
  • Suppression of pain
  • Spontaneous abortion

Soon after injection (or inhalation), heroin crosses the blood-brain barrier. In the brain, heroin is converted to morphine and binds rapidly to opioid receptors. Abusers typically report feeling a surge of pleasurable sensation, a "rush."

The intensity of the rush is a function of how much drug is taken and how rapidly the drug enters the brain and binds to the natural opioid receptors. Heroin is particularly addictive because it enters the brain so rapidly. With heroin, the rush is usually accompanied by a warm flushing of the skin, dry mouth, and a heavy feeling in the extremities, which may be accompanied by nausea, vomiting, and severe itching.

Opiates effect the brain

After the initial effects, abusers usually will be drowsy for several hours. Mental function is clouded by heroin's effect on the central nervous system. Cardiac functions slow. Breathing is also severely slowed, sometimes to the point of death. Heroin overdose is a particular risk on the street, where the amount and purity of the drug cannot be accurately known.

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What are the long-term effects of heroin use?

  • Addiction
  • Infectious diseases, for example, HIV/AIDS and hepatitis B and C
  • Collapsed veins
  • Bacterial infections
  • Abscesses
  • Infection of heart lining and valves
  • Arthritis and other rheumatologic problems

One of the most detrimental long-term effects of heroin is addiction itself. Addiction is a chronic, relapsing disease, characterized by compulsive drug seeking and use, and by neurochemical and molecular changes in the brain. Heroin also produces profound degrees of tolerance and physical dependence, which are also powerful motivating factors for compulsive use and abuse.

As with abusers of any addictive drug, heroin abusers gradually spend more and more time and energy obtaining and using the drug. Once they are addicted, the heroin abusers' primary purpose in life becomes seeking and using drugs. The drugs literally change their brains.

Physical dependence develops with higher doses of the drug. With physical dependence, the body adapts to the presence of the drug and withdrawal symptoms occur if use is reduced abruptly. Withdrawal may occur within a few hours after the last time the drug is taken. Symptoms of withdrawal include restlessness, muscle and bone pain, insomnia, diarrhoea, vomiting, cold sweats with goose bumps ("cold turkey"), and leg movements. Major withdrawal symptoms peak between 24 and 48 hours after the last dose of heroin and subside after about a week. However, some people have shown persistent withdrawal signs for many months. Heroin withdrawal is never fatal to otherwise healthy adults, but it can cause death to the foetus of a pregnant addict.

At some point during continuous heroin use, a person can become addicted to the drug. Sometimes addicted individuals will endure many of the withdrawal symptoms to reduce their tolerance for the drug so that they can again experience the rush.

Physical dependence and the emergence of withdrawal symptoms were once believed to be the key features of heroin addiction. We now know this may not be the case entirely, since craving and relapse can occur weeks and months after withdrawal symptoms are long gone. We also know that patients with chronic pain who need opiates to function (sometimes over extended periods) have few if any problems leaving opiates after their pain is resolved by other means. This may be because the patient in pain is simply seeking relief of pain and not the rush sought by the addict.

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What are the medical complications of chronic heroin abuse?

Medical consequences of chronic heroin abuse include scarred and/or collapsed veins, bacterial infections of the blood vessels and heart valves, abscesses (boils) and other soft-tissue infections, and liver or kidney disease. Lung complications (including various types of pneumonia and tuberculosis) may result from the poor health condition of the abuser as well as from heroin's depressing effects on respiration. Many of the additives in street heroin may include substances that do not readily dissolve and result in clogging the blood vessels that lead to the lungs, liver, kidneys, or brain. This can cause infection or even death of small patches of cells in vital organs. Immune reactions to these or other contaminants can cause arthritis or other rheumatologic problems.

Of course, sharing of injection equipment or fluids can lead to some of the most severe consequences of heroin abuse - infections with hepatitis B and C, HIV, and a host of other blood-borne viruses, which drug abusers can then pass on to their sexual partners and children.

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How does heroin abuse affect pregnant women?

Heroin abuse can cause serious complications during pregnancy, including miscarriage and premature delivery. Children born to addicted mothers are at greater risk of SIDS (sudden infant death syndrome), as well. Pregnant women should not be detoxified from opiates because of the increased risk of spontaneous abortion or premature delivery; rather, treatment with methadone is strongly advised. Although infants born to mothers taking prescribed methadone may show signs of physical dependence, they can be treated easily and safely in the nursery. Research has demonstrated also that the effects of inutero exposure to methadone are relatively benign.

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Why are heroin users at special risk for contracting HIV/AIDS and hepatitis B and C?

Sharing needlesBecause many heroin addicts often share needles and other injection equipment, they are at special risk of contracting HIV and other infectious diseases.

Infection of injection drug users with HIV is spread primarily through reuse of contaminated syringes and needles or other paraphernalia by more than one person, as well as through unprotected sexual intercourse with HIV-infected individuals. For nearly one-third of Americans infected with HIV, injection drug use is a risk factor. In fact, drug abuse is the fastest growing vector for the spread of HIV in the nation.

NIDA-funded research has found that drug abusers can change the behaviours that put them at risk for contracting HIV, through drug abuse treatment, prevention, and community-based outreach programmes. They can eliminate drug use, drug-related risk behaviours such as needle sharing, unsafe sexual practices, and, in turn, the risk of exposure to HIV/AIDS and other infectious diseases. Drug abuse prevention and treatment are highly effective in preventing the spread of HIV.

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Heroin Tolerance, Addiction, and Withdrawal

Heroin addictWith regular heroin use, tolerance develops. This means the abuser must use more heroin to achieve the same intensity or effect. As higher doses are used over time, physical dependence and addiction develop. With physical dependence, the body has adapted to the presence of the drug and withdrawal symptoms may occur if use is reduced or stopped.

Withdrawal, which in regular abusers may occur as early as a few hours after the last administration, produces drug craving, restlessness, muscle and bone pain, insomnia, diarrhoea and vomiting, cold flashes with goose bumps ("cold turkey"), kicking movements ("kicking the habit"), and other symptoms. Major withdrawal symptoms peak between 48 and 72 hours after the last dose and subside after about a week. Sudden withdrawal by heavily dependent users who are in poor health is occasionally fatal, although heroin withdrawal is considered much less dangerous than alcohol or barbiturate withdrawal.

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What are the symptoms of heroin withdrawal?

Regardless of dosage, these reactions may appear:

  • Convulsions
  • Increased heart rate
  • Abnormal heartbeat
  • Heart attack
  • Sudden, sharp blood pressure increase
  • Stroke
  • Extreme depression
  • Suicidal behaviour

As withdrawal progresses, elevations in blood pressure, pulse, respiratory rate and temperature occur. Symptoms of overdose -- which may result in death -- include shallow breathing, clammy skin, convulsions and coma.

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Are there any other problems that can occur from heroin addiction?

Police arrest heroin addictHeroin can cause feelings of depression, which may last for weeks. Attempts to stop using heroin can fail simply because the withdrawal can be overwhelming, causing the addict to use more heroin in an attempt to overcome these symptoms. This overpowering addiction can cause the addict to do anything to get heroin.
 

 

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