medicines that deletes bad memories

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Do you have a really bad memory, or past heartache, that you would prefer to forget? Researchers at Harvard and McGill University (in Montreal) are working on an amnesia d- r- u- g that blocks or deletes bad memories. The technique seems to allow psychiatrists to disrupt the biochemical pathways that allow a memory to be recalled. In a new study, published in the Journal of Psychiatric Research, the d- r -u -g propranolol is used along with therapy to "dampen" memories of trauma victims. They treated 19 accident or r-a-p-e victims for ten days, during which the patients were asked to describe their memories of the traumatic event that had happened 10 years earlier. Some patients were given the d -r- u -g, which is also used to treat amnesia, while others were given a placebo. A week later, they found that patients given the d -r- u -g showed fewer signs of stress when recalling their trauma. Similar research led by Professor Joseph LeDoux has been carried out at New York University on rats; scientists were able to remove a specific memory from the brains of rats while leaving the rest of the animals' memories intact. An amnesia d -r- u -g called U0126 was administered. The rats were trained to associate two musical tones with a mild electrical shock so that when they heard either of the tones they would brace themselves for a shock. The researchers then gave half the rats the d -r -u -g when playing one of the musical tones. After the treatment, the rats that had been given the d -r -u -g no longer associated that particular tone with an imminent shock but still braced themselves upon hearing the second tone, demonstrating only one memory had been deleted. What are your views about this,do you think it is really helpful?