Tranquilizers work better than placebos at treating the symptoms of alcohol withdrawal syndrome but they may not work better than other drugs, according to a new review of recent studies.
The class of depressant drugs known as benzodiazepines are especially effective at treating seizure in withdrawal patients, say Dr. Christos Ntais of the University of Ioannina School of Medicine in Greece and colleagues. People given benzodiazepines were 84 percent less likely to have withdrawal-related seizures compared to those given placebos.
“This might suggest that their [benzodiazepines’] current status as first-line treatment for alcohol withdrawal syndrome is justified,” Ntais and colleagues say.
However, the researchers found no evidence that benzodiazepines are any better than other drugs used for treating alcohol withdrawal syndrome or that there are any differences between types of benzodiazepines for withdrawal treatment.
“There was no conclusive evidence or even hints for superiority of specific drugs, but modest differences could have been missed due to limited data,” Ntais says.
Among the commonly known benzodiazepines are Halcion, Versed, Librium, Xanax and Valium.
In a second review, Dr. Anastasia Polycarpou, also of the University of Ioannina School of Medicine, and colleagues found some evidence that anticonvulsant drugs such as carbamazepine (Epitol or Tegretol, for example) are more effective than placebo at treating alcohol withdrawal, but the difference was not statistically significant.
The reviews appear in the current issue of The Cochrane Library, a publication of The Cochrane Collaboration, an international organization that evaluates medical research. Systematic reviews draw evidence-based conclusions about medical practice after considering both the content and quality of existing medical trials on a topic.
Alcoholics can go through withdrawal when they stop or cut back on their drinking. Symptoms of withdrawal can include everything from insomnia, sweating and rapid heart beat to nausea, seizures and hallucinations. The most severe form of withdrawal syndrome is called delirium tremens.
Alcohol addiction affects certain neurotransmitter circuits in the brain, and the symptoms of alcohol withdrawal reflect the brain’s attempt to readjust those circuits. Benzodiazepines act on one particular type of circuit called GABA pathways.