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The Other Side of
GHB: Date Rape Drug may be Used to Treat Alcoholism
Thomas S. May, Medical Writer
Gamma-hydroxy butyric acid (GHB) has gained
considerable notoriety over the past few years as an illegal "club drug"
that can be used as a date rape drug, due to its unique effects on the
nervous system.
Also known as Liquid Ecstasy, Liquid X, Georgia Home
Boy, and Grievous Bodily Harm, GHB was first noted to have significant
abuse potential by the US Food and Drug Administration (FDA) in 1990.
Abuse of the drug as a diet aid, bodybuilding stimulant, and insomnia
treatment had led to severe reactions, including coma, seizures, and even
death. As a result, the FDA banned GHB in the United States on November 8,
1990.
But according to some studies, this "sinister drug"
can also be used in a much more benign fashion. For example, GHB has been
used successfully as a pediatric anesthetic, an aid to childbirth, and as
a treatment for narcolepsy and alcohol withdrawal.
No more Craving?
Excessive, long-term use of alcohol associated with
alcoholism causes the brain to adapt to the effects of this drug, and when
people with alcoholism stop drinking,
they experience a very intense need to drink alcohol again. This strong
craving makes it very difficult for alcoholics to quit; consequently,
most of them are unable to do so. According to various statistics,
80-90% of people treated for alcoholism
relapse, even after years of abstinence.
Since craving for alcohol is largely responsible for
the high failure rates of alcoholism treatments, a drug that would reduce
the craving could be very useful in helping alcoholics abstain from
drinking. GHB is one such drug, according to researchers in Italy, and
this drug has been used to treat alcoholics in Europe for many years.
In an article published in the April 2000 issue of
the journal Alcohol, Luigi Gallimberti, MD, and his colleagues at
the University of Padua reviewed two
double-blind, placebo-controlled studies that tested the effectiveness of
GHB for alcohol withdrawal. The studies showed that "daily administration
of 50 mg/kg gamma-hydroxybutyric acid for three consecutive months reduced
the number of drinks per day by approximately 50%, increased the days of
abstinence approximately threefold, and reduced the alcohol craving score
by up to 60%." These results show that gamma-hydroxybutyric acid (GHB) is
an effective agent for the treatment of alcohol dependence, the scientists
concluded.
Similar results were also obtained in a study done by
Giovanni Addolorato, MD, of the Catholic University of Rome, and his
colleagues. "As far as GHB treatment for maintaining abstinence is
concerned, the drug proved to be effective in reducing craving and in
improving the abstinence rate in about 60-70% of alcoholics treated," Dr.
Addolorato says. The investigators found that the rate of abstinence was
even greater when the same amount of GHB (50 mg/kg/day) was administered
in smaller but more frequent doses (six times a day, instead of three
times a day).
Like Methadone for Heroin Addicts
Treating alcoholics with GHB is very similar to
treating heroin addicts with methadone, the Italian researchers claim.
Methadone maintenance treatment has been used for heroin addiction
throughout the world for decades, and many studies have shown that it is a
useful and effective treatment.
"Methadone treatment may make it easier for some
[heroin] addicts to stop eventually," says Barry Beyerstein, PhD, a
physiological psychologist and addiction expert at Simon Fraser
University, British Columbia, Canada. "But the real value of methadone is
that it reduces the craving and the withdrawal symptoms," he explains.
"Methadone enables people to stop using needles and to stay on a
relatively low dose that doesn't keep them 'bombed' all the time. As a
result, they may be able to turn their lives around, they can work, and
they can be acceptable members of their families and of society in
general."
The situation is quite similar in the case of
alcoholics treated with GHB, according to Dr. Gallimberti. Although some
of them can stop taking the drug after two or three months, others may
need maintenance treatment for many years, he says. But even those who
need long-term treatment are much better off than those who are not
treated at all and continue to abuse alcohol, Gallimberti argues. The
reason for this, he says, is that--at therapeutic doses--GHB is much less
harmful than the large amounts of alcohol usually consumed by alcoholics.
Continental Divide
Given the positive results obtained in Europe, one
may wonder why GHB is not used to treat alcoholics in other parts of the
world, particularly in North America.
"GHB is not used legitimately in the United States,
because it is not a benign drug," says David E. Smith, MD, medical
director of the Haight Ashbury Free Clinics in San Francisco. "In Italy,
they focused on its benefits and tended to minimize its abuse, whereas
here in the United States therapeutic benefit has not been established,
and we are seeing a lot greater abuse and dependence," he adds.
Still, some addiction experts in the US believe that
GHB treatment for alcoholism merits further study. For example, according
to K. Michael Gibson, PhD, an Associate Professor at the Oregon Health
Sciences University, "GHB is better than alcohol, because alcohol has
long-range hepatotoxic and neurotoxic effects (it is poisonous to the
liver and the nervous system), and these effects are not associated with
GHB. Therefore, I think that GHB is going to demand more attention in the
treatment of alcohol withdrawal syndrome in the future."
Sidebar:
GHB and Alcohol*
- A growing body of evidence suggests that GHB
reduces the effects of alcohol withdrawal by being a substitute for
alcohol, like methadone in heroin addiction.
- Alcohol and GHB share several pharmacological
characteristics, suggesting that GHB may mimic the actions of alcohol in
the central nervous system.
- Like alcohol, GHB has a strong anti-anxiety
effect.
- The toxic effects of large amounts of alcohol
normally consumed by alcoholics are well known. GHB appears to be safer,
as indicated by the reduction in liver damage in the treated patients.
- The adverse effects of GHB that have been reported
in the past (coma, seizure, confusion, hallucination) were mainly
described in healthy, non-alcoholic subjects who took the "street
version" of the drug, and were often related to acute toxicity and
overdose.
- Like alcohol, GHB possesses abuse potential, being
self-administered orally and intravenously.
- Cases of craving for GHB with consequent abuse of
the drug and possible dependence may occur during treatment. Therefore,
GHB must be used under strict medical surveillance and with the
cooperation of a trusted family member, in order to obtain prompt
reports of abuse.
*Excerpts from an interview with Dr. Giovanni
Addolorato--one of the world's foremost experts on the use of GHB for
alcoholism.
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