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I have delete this claim lacking reference "A recently completed randomized double-blind trial among veteran patients with chronic PTSD showed that augmentation with guanfacine was associated with improvement in anxiety and PTSD". On the contrary, I have found two publications that claim it hasn't utility in post-traumatic disorder in veterans.

• No Improvement of Posttraumatic Stress Disorder Symptoms With Guanfacine
• A placebo-controlled trial of guanfacine for the treatment of posttraumatic stress disorder in veterans

-- Evasivo ( talk) 14:48, 11 July 2016 (UTC) reply