A widely available blood pressure pill could one day help people erase bad memories, perhaps treating some anxiety disorders and phobias, according to a Dutch study published on Sunday. The findings published in the journal Nature Neuroscience are important because the drug may offer another way to help people suffering from post-traumatic stress disorder and other problems related to bad memories. Traditionally, therapists seek to teach people with such disorders strategies to build new associations and block bad memories. The problem is the memories remain and people often relapse. Animal studies have shown that fear memories can change when recalled, a process known as reconsolidation. At this stage they are also vulnerable to beta-blockers like propranolol, which target neurons in the brain, the researchers said. The next steps are to look at how long the drug's effects on memory last, and testing the treatment in people who actually are suffering from some kind of disorder or phobia.