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Well Known Blood Pressure Drug may Remove Post Traumatic Stress and Phobias
Merel Kindt and her colleagues at the University of Amsterdam, the Netherlands, have revealed that this drug is called the beta blocker propranolol.
The researcher points out that people who experienced traumatic events-like rape and car crashes-showed fewer signs of stress while recalling the event when they had been injected with the beta blocker propranolol in experiments conducted in the past.
However, it still remained unclear whether the effect would be permanent or not because fearful memories often return, even after people have been treated for them.
Merel said that her team investigated whether propranolol could stop fear returning in the longer term by conditioning 60 healthy students to associate a picture of a spider with an electric shock, so that they would eventually be startled by the picture even in the absence of a shock.
The researchers noted that the startle response was eliminated in students who were given oral propranolol before seeing the picture.
They even observed that the response did not return when the students were put through a second round of conditioning, which should have reinstated their fear.
Merel said that that observation indicated that the link between the students' memories and fears might have been permanently broken.
She further said that those given a placebo pill could eventually be trained not to be startled by the spider picture, by repeatedly showing it to them in the absence of a shock.
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