American scientists are investigating whether the illegal “rave” drug Ecstasy can ease the anxiety of dying cancer patients in their final days.

The Food and Drug Administration has approved a pilot study looking at whether the recreational hallucinogen can help terminally-ill patients lessen their fears, quell thoughts of suicide and make it easier for them to deal with loved ones.

“End of life issues are very important and are getting more and more attention, and yet there are very few options for patients who are facing death,” Dr John Halpern, the Harvard research psychiatrist in charge of the study, said.

The small four-month study is expected to begin early next spring. It will test the drug’s effects on 12 cancer patients from the Lahey Clinic Medical Centre in the Boston area. The research is being sponsored by the Multidisciplinary Association for Psychedelic Studies, a non-profit group that plans to raise 250,000 (-184,816) to fund it.

MAPS, on its web site, touted the study’s approval, saying ”the longest day of winter has passed, and maybe so has the decades-long era of resistance to psychedelic research.”

The FDA would not comment, but this will be the second FDA-approved study using Ecstasy this year. South Carolina researchers are studying the effects of Ecstasy on 20 patients suffering from post traumatic stress disorder.

Ecstasy, known scientifically as MDMA – methylenedioxymethamphetamine – is a chemical cousin of methamphetamine and typically induces feelings of euphoria, increased energy and sexual arousal. But it also suppresses appetite, thirst and the need to sleep, and in high doses can sharply increase body temperature, leading to kidney and heart failure, and death.

It peaked in 2001 as a trendy recreational drug used by youth at gatherings called “raves” and dance clubs.

Halpern, who has done other research on the effects of hallucinogenic drugs, said that some, when used properly, could have medical benefits. He said that unlike LSD, Ecstasy was “ego-friendly” and unlike some pain medications it did not oversedate people and make them foggy and unsteady.

Instead, he said, it could reduce stress and increase empathy. There were anecdotal reports, he said, of people dying of cancer who took Ecstasy and they were able to talk to their family and friends about death and other subjects they couldn’t broach before.

“I’m hoping that we can find something that can be of use for people in their remaining days of life,” he said. If there are no significant problems, he said broader studies would follow this one.