Researchers at the Norwegian University of Science and Technology analysed earlier studies on the drug between 1966 and 1970.Patients were all taking part in alcohol treatment programmes, but some were given a single dose of LSD of between 210 and 800 micrograms.
Dangers of LSD
During a trip the person may put themselves in danger without realising it such as thinking they can fly and trying to jump off a high building.
In some people, especially if LSD is taken in high doses, the drug can cause intense anxiety and panic attacks.
Some people experience flashbacks, reliving a bad trip weeks or even months after it happened.
In those already vulnerable, LSD may be the trigger for psychotic illness. Paranoia and other symptoms typical of schizophrenia may occur.
For the group of patients taking LSD, 59% showed reduced levels of alcohol misuse compared with 38% in the other group.
This effect was maintained six months after taking the hallucinogen, but it disappeared after a year. Those taking LSD also reported higher levels of abstinence.
The report’s authors, Teri Krebs and Pal-Orjan Johansen, said: “A single dose of LSD has a significant beneficial effect on alcohol misuse.”
They suggested that more regular doses might lead to a sustained benefit.
“Given the evidence for a beneficial effect of LSD on alcoholism, it is puzzling why this treatment approach has been largely overlooked,” they added.
Prof David Nutt, who was sacked as the UK government’s drugs adviser, has previously called for the laws around illegal drugs to be relaxed to enable more research.
He said: “Curing alcohol dependency requires huge changes in the way you see yourself. That’s what LSD does.
“Overall there is a big effect, show me another treatment with results as good; we’ve missed a trick here.